diff --git a/test/test_live.py b/test/test_live.py
index ddb1b92..57c57ec 100644
--- a/test/test_live.py
+++ b/test/test_live.py
@@ -293,7 +293,7 @@ def test_multitenancy_example(self):
         self.assertEqual(len(tenant1_users_list.results), 0)
 
         # Assign user1 -> tenant1
-        tenant1.assign_user(user1.id, "member")
+        tenant1.assign_user(user1.id)
 
         user1_tenants_list = warrant.Tenant.list_for_user(user1.id, {"limit": 100}, {"Warrant-Token": "latest"})
         self.assertEqual(len(user1_tenants_list.results), 1)
@@ -306,7 +306,7 @@ def test_multitenancy_example(self):
         self.assertEqual(tenant1_users_list.results[0].meta, {})
 
         # Remove user1 -> tenant1
-        tenant1.remove_user(user1.id, "member")
+        tenant1.remove_user(user1.id)
 
         user1_tenants_list = warrant.Tenant.list_for_user(user1.id, {"limit": 100}, {"Warrant-Token": "latest"})
         self.assertEqual(len(user1_tenants_list.results), 0)
@@ -346,8 +346,8 @@ def test_rbac_example(self):
         self.assertEqual(admin_user_has_permission, False)
 
         # Assign 'create-report' -> admin role -> admin user
-        admin_role.assign_permission(create_permission.id, "member")
-        admin_user.assign_role(admin_role.id, "member")
+        admin_role.assign_permission(create_permission.id)
+        admin_user.assign_role(admin_role.id)
 
         admin_user_has_permission = admin_user.has_permission(create_permission.id, {"Warrant-Token": "latest"})
         self.assertEqual(admin_user_has_permission, True)
@@ -363,8 +363,8 @@ def test_rbac_example(self):
         self.assertEqual(admin_role_permissions_list.results[0].meta, {"name": "Create Report", "description": "Permission to create reports"})
 
         # Remove 'create-report' -> admin role -> admin user
-        admin_role.remove_permission(create_permission.id, "member")
-        admin_user.remove_role(admin_role.id, "member")
+        admin_role.remove_permission(create_permission.id)
+        admin_user.remove_role(admin_role.id)
 
         admin_user_has_permission = admin_user.has_permission(create_permission.id, {"Warrant-Token": "latest"})
         self.assertEqual(admin_user_has_permission, False)
@@ -382,7 +382,7 @@ def test_rbac_example(self):
         viewer_user_permissions_list = warrant.Permission.list_for_user(viewer_user.id, {"limit": 100}, {"Warrant-Token": "latest"})
         self.assertEqual(len(viewer_user_permissions_list.results), 0)
 
-        viewer_user.assign_permission(view_permission.id, "member")
+        viewer_user.assign_permission(view_permission.id)
 
         viewer_user_has_permission = viewer_user.has_permission(view_permission.id, {"Warrant-Token": "latest"})
         self.assertEqual(viewer_user_has_permission, True)
@@ -392,7 +392,7 @@ def test_rbac_example(self):
         self.assertEqual(viewer_user_permissions_list.results[0].object_id, view_permission.id)
         self.assertEqual(viewer_user_permissions_list.results[0].meta, {"name": "View Report", "description": "Permission to view reports"})
 
-        viewer_user.remove_permission(view_permission.id, "member")
+        viewer_user.remove_permission(view_permission.id)
 
         viewer_user_has_permission = viewer_user.has_permission(view_permission.id, {"Warrant-Token": "latest"})
         self.assertEqual(viewer_user_has_permission, False)
@@ -435,7 +435,7 @@ def test_pricing_tiers_features_and_users_example(self):
         paid_user_features_list = warrant.Feature.list_for_user(paid_user.id, {"limit": 100}, {"Warrant-Token": "latest"})
         self.assertEqual(len(paid_user_features_list.results), 0)
 
-        paid_user.assign_feature(custom_feature.id, "member")
+        paid_user.assign_feature(custom_feature.id)
 
         paid_user_has_feature = paid_user.has_feature(custom_feature.id, {"Warrant-Token": "latest"})
         self.assertEqual(paid_user_has_feature, True)
@@ -445,7 +445,7 @@ def test_pricing_tiers_features_and_users_example(self):
         self.assertEqual(paid_user_features_list.results[0].object_id, "custom-feature")
         self.assertEqual(paid_user_features_list.results[0].meta, {"name": "Custom Feature"})
 
-        paid_user.remove_feature(custom_feature.id, "member")
+        paid_user.remove_feature(custom_feature.id)
 
         paid_user_has_feature = paid_user.has_feature(custom_feature.id, {"Warrant-Token": "latest"})
         self.assertEqual(paid_user_has_feature, False)
@@ -463,8 +463,8 @@ def test_pricing_tiers_features_and_users_example(self):
         free_user_tiers_list = warrant.PricingTier.list_for_user(free_user.id, {"limit": 100}, {"Warrant-Token": "latest"})
         self.assertEqual(len(free_user_tiers_list.results), 0)
 
-        free_tier.assign_feature(feature1.id, "member")
-        free_user.assign_pricing_tier(free_tier.id, "member")
+        free_tier.assign_feature(feature1.id)
+        free_user.assign_pricing_tier(free_tier.id)
 
         free_user_has_feature = free_user.has_feature(feature1.id, {"Warrant-Token": "latest"})
         self.assertEqual(free_user_has_feature, True)
@@ -479,8 +479,8 @@ def test_pricing_tiers_features_and_users_example(self):
         self.assertEqual(free_user_tiers_list.results[0].object_id, "free")
         self.assertEqual(free_user_tiers_list.results[0].meta, {"name": "Free Tier"})
 
-        free_tier.remove_feature(feature1.id, "member")
-        free_user.remove_pricing_tier(free_tier.id, "member")
+        free_tier.remove_feature(feature1.id)
+        free_user.remove_pricing_tier(free_tier.id)
 
         free_user_has_feature = free_user.has_feature(feature1.id, {"Warrant-Token": "latest"})
         self.assertEqual(free_user_has_feature, False)
@@ -528,7 +528,7 @@ def test_pricing_tiers_features_and_tenants_example(self):
         paid_tenant_features_list = paid_tenant.list_features({"limit": 100}, {"Warrant-Token": "latest"})
         self.assertEqual(len(paid_tenant_features_list.results), 0)
 
-        paid_tenant.assign_feature(custom_feature.id, "member")
+        paid_tenant.assign_feature(custom_feature.id)
 
         paid_tenant_has_feature = paid_tenant.has_feature(custom_feature.id, {"Warrant-Token": "latest"})
         self.assertEqual(paid_tenant_has_feature, True)
@@ -538,7 +538,7 @@ def test_pricing_tiers_features_and_tenants_example(self):
         self.assertEqual(paid_tenant_features_list.results[0].object_id, "custom-feature")
         self.assertEqual(paid_tenant_features_list.results[0].meta, {"name": "Custom Feature"})
 
-        paid_tenant.remove_feature(custom_feature.id, "member")
+        paid_tenant.remove_feature(custom_feature.id)
 
         paid_tenant_has_feature = paid_tenant.has_feature(custom_feature.id, {"Warrant-Token": "latest"})
         self.assertEqual(paid_tenant_has_feature, False)
@@ -556,8 +556,8 @@ def test_pricing_tiers_features_and_tenants_example(self):
         free_tenant_tiers_list = free_tenant.list_pricing_tiers({"limit": 100}, {"Warrant-Token": "latest"})
         self.assertEqual(len(free_tenant_tiers_list.results), 0)
 
-        free_tier.assign_feature(feature1.id, "member")
-        free_tenant.assign_pricing_tier(free_tier.id, "member")
+        free_tier.assign_feature(feature1.id)
+        free_tenant.assign_pricing_tier(free_tier.id)
 
         free_tenant_has_feature = free_tenant.has_feature(feature1.id, {"Warrant-Token": "latest"})
         self.assertEqual(free_tenant_has_feature, True)
@@ -572,8 +572,8 @@ def test_pricing_tiers_features_and_tenants_example(self):
         self.assertEqual(free_tenant_tiers_list.results[0].object_id, "free")
         self.assertEqual(free_tenant_tiers_list.results[0].meta, {"name": "Free Tier"})
 
-        free_tier.remove_feature(feature1.id, "member")
-        free_tenant.remove_pricing_tier(free_tier.id, "member")
+        free_tier.remove_feature(feature1.id)
+        free_tenant.remove_pricing_tier(free_tier.id)
 
         free_tenant_has_feature = free_tenant.has_feature(feature1.id, {"Warrant-Token": "latest"})
         self.assertEqual(free_tenant_has_feature, False)
diff --git a/warrant/feature.py b/warrant/feature.py
index 70bcbca..58da421 100644
--- a/warrant/feature.py
+++ b/warrant/feature.py
@@ -52,12 +52,12 @@ def list_for_pricing_tier(cls, pricing_tier_id: str, list_params: Dict[str, Any]
             return ListResult[Feature](list(features))
 
     @classmethod
-    def assign_to_pricing_tier(cls, pricing_tier_id: str, feature_id: str, relation, opts: Dict[str, Any] = {}):
+    def assign_to_pricing_tier(cls, pricing_tier_id: str, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         pricing_tier_subject = Subject(constants.PRICING_TIER_OBJECT_TYPE, pricing_tier_id)
         return Warrant.create(constants.FEATURE_OBJECT_TYPE, feature_id, relation, pricing_tier_subject, opts=opts)
 
     @classmethod
-    def remove_from_pricing_tier(cls, pricing_tier_id: str, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_from_pricing_tier(cls, pricing_tier_id: str, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         pricing_tier_subject = Subject(constants.PRICING_TIER_OBJECT_TYPE, pricing_tier_id)
         return Warrant.delete(constants.FEATURE_OBJECT_TYPE, feature_id, relation, pricing_tier_subject, opts=opts)
 
@@ -78,12 +78,12 @@ def list_for_tenant(cls, tenant_id: str, list_params: Dict[str, Any] = {}, opts:
             return ListResult[Feature](list(features))
 
     @classmethod
-    def assign_to_tenant(cls, tenant_id: str, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_to_tenant(cls, tenant_id: str, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         tenant_subject = Subject(constants.TENANT_OBJECT_TYPE, tenant_id)
         return Warrant.create(constants.FEATURE_OBJECT_TYPE, feature_id, relation, tenant_subject, opts=opts)
 
     @classmethod
-    def remove_from_tenant(cls, tenant_id: str, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_from_tenant(cls, tenant_id: str, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         tenant_subject = Subject(constants.TENANT_OBJECT_TYPE, tenant_id)
         return Warrant.delete(constants.FEATURE_OBJECT_TYPE, feature_id, relation, tenant_subject, opts=opts)
 
@@ -104,12 +104,12 @@ def list_for_user(cls, user_id: str, list_params: Dict[str, Any] = {}, opts: Dic
             return ListResult[Feature](list(features))
 
     @classmethod
-    def assign_to_user(cls, user_id: str, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_to_user(cls, user_id: str, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.create(constants.FEATURE_OBJECT_TYPE, feature_id, relation, user_subject, opts=opts)
 
     @classmethod
-    def remove_from_user(cls, user_id: str, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_from_user(cls, user_id: str, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.delete(constants.FEATURE_OBJECT_TYPE, feature_id, relation, user_subject, opts=opts)
 
diff --git a/warrant/permission.py b/warrant/permission.py
index 4fb94a0..2d6898e 100644
--- a/warrant/permission.py
+++ b/warrant/permission.py
@@ -52,12 +52,12 @@ def list_for_user(cls, user_id: str, list_params: Dict[str, Any] = {}, opts: Dic
             return ListResult[Permission](list(permissions))
 
     @classmethod
-    def assign_to_user(cls, user_id: str, permission_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_to_user(cls, user_id: str, permission_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.create(constants.PERMISSION_OBJECT_TYPE, permission_id, relation, user_subject, opts=opts)
 
     @classmethod
-    def remove_from_user(cls, user_id: str, permission_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_from_user(cls, user_id: str, permission_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.delete(constants.PERMISSION_OBJECT_TYPE, permission_id, relation, user_subject, opts=opts)
 
@@ -78,12 +78,12 @@ def list_for_role(cls, role_id: str, list_params: Dict[str, Any] = {}, opts: Dic
             return ListResult[Permission](list(permissions))
 
     @classmethod
-    def assign_to_role(cls, role_id: str, permission_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_to_role(cls, role_id: str, permission_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         role_subject = Subject(constants.ROLE_OBJECT_TYPE, role_id)
         return Warrant.create(constants.PERMISSION_OBJECT_TYPE, permission_id, relation, role_subject, opts=opts)
 
     @classmethod
-    def remove_from_role(cls, role_id: str, permission_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_from_role(cls, role_id: str, permission_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         role_subject = Subject(constants.ROLE_OBJECT_TYPE, role_id)
         return Warrant.delete(constants.PERMISSION_OBJECT_TYPE, permission_id, relation, role_subject, opts=opts)
 
diff --git a/warrant/pricing_tier.py b/warrant/pricing_tier.py
index 7c3c745..2adff74 100644
--- a/warrant/pricing_tier.py
+++ b/warrant/pricing_tier.py
@@ -41,10 +41,10 @@ def delete(cls, id: str, opts: Dict[str, Any] = {}):
     def list_features(self, list_params: Dict[str, Any] = {}, opts: Dict[str, Any] = {}) -> ListResult[Feature]:
         return Feature.list_for_pricing_tier(pricing_tier_id=self.id, list_params=list_params, opts=opts)
 
-    def assign_feature(self, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_feature(self, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Feature.assign_to_pricing_tier(pricing_tier_id=self.id, feature_id=feature_id, relation=relation, opts=opts)
 
-    def remove_feature(self, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_feature(self, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Feature.remove_from_pricing_tier(pricing_tier_id=self.id, feature_id=feature_id, relation=relation, opts=opts)
 
     """
@@ -64,12 +64,12 @@ def list_for_tenant(cls, tenant_id: str, list_params: Dict[str, Any] = {}, opts:
             return ListResult[PricingTier](list(pricing_tiers))
 
     @classmethod
-    def assign_to_tenant(cls, tenant_id: str, pricing_tier_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_to_tenant(cls, tenant_id: str, pricing_tier_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         tenant_subject = Subject(constants.TENANT_OBJECT_TYPE, tenant_id)
         return Warrant.create(constants.PRICING_TIER_OBJECT_TYPE, pricing_tier_id, relation, tenant_subject, opts=opts)
 
     @classmethod
-    def remove_from_tenant(cls, tenant_id: str, pricing_tier_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_from_tenant(cls, tenant_id: str, pricing_tier_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         tenant_subject = Subject(constants.TENANT_OBJECT_TYPE, tenant_id)
         return Warrant.delete(constants.PRICING_TIER_OBJECT_TYPE, pricing_tier_id, relation, tenant_subject, opts=opts)
 
@@ -90,12 +90,12 @@ def list_for_user(cls, user_id: str, list_params: Dict[str, Any] = {}, opts: Dic
             return ListResult[PricingTier](list(pricing_tiers))
 
     @classmethod
-    def assign_to_user(cls, user_id: str, pricing_tier_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_to_user(cls, user_id: str, pricing_tier_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.create(constants.PRICING_TIER_OBJECT_TYPE, pricing_tier_id, relation, user_subject, opts=opts)
 
     @classmethod
-    def remove_from_user(cls, user_id: str, pricing_tier_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_from_user(cls, user_id: str, pricing_tier_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.delete(constants.PRICING_TIER_OBJECT_TYPE, pricing_tier_id, relation, user_subject, opts=opts)
 
diff --git a/warrant/role.py b/warrant/role.py
index 1ca8c85..52468a6 100644
--- a/warrant/role.py
+++ b/warrant/role.py
@@ -52,12 +52,12 @@ def list_for_user(cls, user_id: str, list_params: Dict[str, Any] = {}, opts: Dic
             return ListResult[Role](list(roles))
 
     @classmethod
-    def assign_to_user(cls, user_id: str, role_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_to_user(cls, user_id: str, role_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.create(constants.ROLE_OBJECT_TYPE, role_id, relation, user_subject, opts=opts)
 
     @classmethod
-    def remove_from_user(cls, user_id: str, role_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_from_user(cls, user_id: str, role_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.delete(constants.ROLE_OBJECT_TYPE, role_id, relation, user_subject, opts=opts)
 
@@ -67,10 +67,10 @@ def remove_from_user(cls, user_id: str, role_id: str, relation: str, opts: Dict[
     def list_permissions(self, list_params: Dict[str, Any] = {}, opts: Dict[str, Any] = {}) -> ListResult["Permission"]:
         return Permission.list_for_role(self.id, list_params, opts=opts)
 
-    def assign_permission(self, permission_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_permission(self, permission_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Permission.assign_to_role(self.id, permission_id, relation, opts=opts)
 
-    def remove_permission(self, permission_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_permission(self, permission_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Permission.remove_from_role(self.id, permission_id, relation, opts=opts)
 
     """
diff --git a/warrant/tenant.py b/warrant/tenant.py
index 97636ec..0dd4d0f 100644
--- a/warrant/tenant.py
+++ b/warrant/tenant.py
@@ -69,10 +69,10 @@ def list_for_user(cls, user_id: str, list_params: Dict[str, Any] = {}, opts: Dic
     def list_users(self, list_params: Dict[str, Any] = {}, opts: Dict[str, Any] = {}) -> ListResult["User"]:
         return User.list_for_tenant(self.id, list_params, opts=opts)
 
-    def assign_user(self, user_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_user(self, user_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         User.assign_to_tenant(self.id, user_id, relation, opts=opts)
 
-    def remove_user(self, user_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_user(self, user_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         User.remove_from_tenant(self.id, user_id, relation, opts=opts)
 
     """
@@ -81,10 +81,10 @@ def remove_user(self, user_id: str, relation: str, opts: Dict[str, Any] = {}):
     def list_pricing_tiers(self, list_params: Dict[str, Any] = {}, opts: Dict[str, Any] = {}):
         return PricingTier.list_for_tenant(self.id, list_params, opts=opts)
 
-    def assign_pricing_tier(self, pricing_tier_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_pricing_tier(self, pricing_tier_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         PricingTier.assign_to_tenant(self.id, pricing_tier_id, relation, opts=opts)
 
-    def remove_pricing_tier(self, pricing_tier_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_pricing_tier(self, pricing_tier_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         PricingTier.remove_from_tenant(self.id, pricing_tier_id, relation, opts=opts)
 
     """
@@ -93,10 +93,10 @@ def remove_pricing_tier(self, pricing_tier_id: str, relation: str, opts: Dict[st
     def list_features(self, list_params: Dict[str, Any] = {}, opts: Dict[str, Any] = {}):
         return Feature.list_for_tenant(self.id, list_params, opts=opts)
 
-    def assign_feature(self, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_feature(self, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Feature.assign_to_tenant(self.id, feature_id, relation, opts=opts)
 
-    def remove_feature(self, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_feature(self, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Feature.remove_from_tenant(self.id, feature_id, relation, opts=opts)
 
     def has_feature(self, feature_id: str, opts: Dict[str, Any] = {}):
diff --git a/warrant/user.py b/warrant/user.py
index d341c48..f21a543 100644
--- a/warrant/user.py
+++ b/warrant/user.py
@@ -64,12 +64,12 @@ def batch_delete(cls, users: List[Dict[str, Any]], opts: Dict[str, Any] = {}) ->
     Tenants
     """
     @classmethod
-    def assign_to_tenant(cls, tenant_id: str, user_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_to_tenant(cls, tenant_id: str, user_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.create(constants.TENANT_OBJECT_TYPE, tenant_id, relation, user_subject, opts=opts)
 
     @classmethod
-    def remove_from_tenant(cls, tenant_id: str, user_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_from_tenant(cls, tenant_id: str, user_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         user_subject = Subject(constants.USER_OBJECT_TYPE, user_id)
         return Warrant.delete(constants.TENANT_OBJECT_TYPE, tenant_id, relation, user_subject, opts=opts)
 
@@ -79,10 +79,10 @@ def remove_from_tenant(cls, tenant_id: str, user_id: str, relation: str, opts: D
     def list_roles(self, list_params: Dict[str, Any] = {}, opts: Dict[str, Any] = {}):
         return Role.list_for_user(self.id, list_params, opts=opts)
 
-    def assign_role(self, role_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_role(self, role_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Role.assign_to_user(self.id, role_id, relation, opts=opts)
 
-    def remove_role(self, role_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_role(self, role_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Role.remove_from_user(self.id, role_id, relation, opts=opts)
 
     """
@@ -91,10 +91,10 @@ def remove_role(self, role_id: str, relation: str, opts: Dict[str, Any] = {}):
     def list_permissions(self, list_params: Dict[str, Any] = {}, opts: Dict[str, Any] = {}):
         return Permission.list_for_user(self.id, list_params, opts=opts)
 
-    def assign_permission(self, permission_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_permission(self, permission_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Permission.assign_to_user(self.id, permission_id, relation, opts=opts)
 
-    def remove_permission(self, permission_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_permission(self, permission_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Permission.remove_from_user(self.id, permission_id, relation, opts=opts)
 
     def has_permission(self, permission_id: str, opts: Dict[str, Any] = {}):
@@ -106,10 +106,10 @@ def has_permission(self, permission_id: str, opts: Dict[str, Any] = {}):
     def list_pricing_tiers(self, list_params: Dict[str, Any] = {}, opts: Dict[str, Any] = {}):
         return PricingTier.list_for_user(self.id, list_params, opts=opts)
 
-    def assign_pricing_tier(self, pricing_tier_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_pricing_tier(self, pricing_tier_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         PricingTier.assign_to_user(self.id, pricing_tier_id, relation, opts=opts)
 
-    def remove_pricing_tier(self, pricing_tier_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_pricing_tier(self, pricing_tier_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         PricingTier.remove_from_user(self.id, pricing_tier_id, relation, opts=opts)
 
     """
@@ -118,10 +118,10 @@ def remove_pricing_tier(self, pricing_tier_id: str, relation: str, opts: Dict[st
     def list_features(self, list_params={}, opts: Dict[str, Any] = {}):
         return Feature.list_for_user(self.id, list_params, opts=opts)
 
-    def assign_feature(self, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def assign_feature(self, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Feature.assign_to_user(self.id, feature_id, relation, opts=opts)
 
-    def remove_feature(self, feature_id: str, relation: str, opts: Dict[str, Any] = {}):
+    def remove_feature(self, feature_id: str, relation: str = "member", opts: Dict[str, Any] = {}):
         Feature.remove_from_user(self.id, feature_id, relation, opts=opts)
 
     def has_feature(self, feature_id: str, opts: Dict[str, Any] = {}):