diff --git a/src/AmoCRM/Models/Unsorted/BaseUnsortedModel.php b/src/AmoCRM/Models/Unsorted/BaseUnsortedModel.php
index d407200c..07891a97 100644
--- a/src/AmoCRM/Models/Unsorted/BaseUnsortedModel.php
+++ b/src/AmoCRM/Models/Unsorted/BaseUnsortedModel.php
@@ -362,6 +362,10 @@ public function toArray(): array
             $result['lead'] = $this->getLead()->toArray();
         }
 
+        if (!is_null($this->getLead())) {
+            $result['leads'] = [$this->getLead()->toArray()];
+        }
+
         if (!is_null($this->getCompanies())) {
             $result['companies'] = $this->getCompanies()->toArray();
         }
@@ -408,7 +412,7 @@ public function toApi(?string $requestId = "0"): array
         $requestId = $this->getRequestId();
 
         if (!is_null($this->getLead())) {
-            $result[AmoCRMApiRequest::EMBEDDED]['lead'] = $this->getLead()->toApi($requestId);
+            $result[AmoCRMApiRequest::EMBEDDED]['leads'] = [$this->getLead()->toApi($requestId)];
         }
 
         if (!is_null($this->getCompanies())) {