diff --git a/Sources/TelemetryClient/Signal.swift b/Sources/TelemetryClient/Signal.swift
index 578e89e..67d89ea 100644
--- a/Sources/TelemetryClient/Signal.swift
+++ b/Sources/TelemetryClient/Signal.swift
@@ -33,7 +33,7 @@ internal struct SignalPostBody: Codable, Equatable {
     let floatValue: Double?
 
     /// Tags in the form "key:value" to attach to the signal
-    let payload: [String]
+    let payload: [String: String]
 
     /// If "true", mark the signal as a testing signal and only show it in a dedicated test mode UI
     let isTestMode: String
diff --git a/Sources/TelemetryClient/SignalEnricher.swift b/Sources/TelemetryClient/SignalEnricher.swift
index 09bc411..b88f4c3 100644
--- a/Sources/TelemetryClient/SignalEnricher.swift
+++ b/Sources/TelemetryClient/SignalEnricher.swift
@@ -14,10 +14,4 @@ extension Dictionary where Key == String, Value == String {
             other
         }
     }
-
-    func toMultiValueDimension() -> [String] {
-        map { key, value in
-            key.replacingOccurrences(of: ":", with: "_") + ":" + value
-        }
-    }
 }
diff --git a/Sources/TelemetryClient/SignalManager.swift b/Sources/TelemetryClient/SignalManager.swift
index c61af7d..0e240a8 100644
--- a/Sources/TelemetryClient/SignalManager.swift
+++ b/Sources/TelemetryClient/SignalManager.swift
@@ -95,7 +95,7 @@ internal final class SignalManager: SignalManageable, @unchecked Sendable {
                     sessionID: configuration.sessionID.uuidString,
                     type: "\(signalName)",
                     floatValue: floatValue,
-                    payload: payload.toMultiValueDimension(),
+                    payload: payload,
                     isTestMode: configuration.testMode ? "true" : "false"
                 )
 
@@ -184,7 +184,7 @@ private extension SignalManager {
 private extension SignalManager {
     private func send(_ signalPostBodies: [SignalPostBody], completionHandler: @escaping @Sendable (Data?, URLResponse?, Error?) -> Void) {
         DispatchQueue.global(qos: .utility).async {
-            let path = "/api/v1/apps/\(self.configuration.telemetryAppID)/signals/multiple/"
+            let path = "/v2/"
             let url = self.configuration.apiBaseURL.appendingPathComponent(path)
 
             var urlRequest = URLRequest(url: url)
diff --git a/Tests/TelemetryClientTests/TelemetryClientTests.swift b/Tests/TelemetryClientTests/TelemetryClientTests.swift
index 360dfc5..459643a 100644
--- a/Tests/TelemetryClientTests/TelemetryClientTests.swift
+++ b/Tests/TelemetryClientTests/TelemetryClientTests.swift
@@ -2,7 +2,6 @@
 import XCTest
 
 final class TelemetryClientTests: XCTestCase {
-    
     func testSending() {
         let YOUR_APP_ID = "44e0f59a-60a2-4d4a-bf27-1f96ccb4aaa3"
 
@@ -17,21 +16,21 @@ final class TelemetryClientTests: XCTestCase {
         let signalCache = SignalCache<SignalPostBody>(logHandler: nil)
         
         let signals: [SignalPostBody] = [
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "01", sessionID: "01", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "02", sessionID: "02", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "03", sessionID: "03", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "04", sessionID: "04", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "05", sessionID: "05", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "06", sessionID: "06", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "07", sessionID: "07", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "08", sessionID: "08", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "09", sessionID: "09", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "10", sessionID: "10", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "11", sessionID: "11", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "12", sessionID: "12", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "13", sessionID: "13", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "14", sessionID: "14", type: "test", floatValue: nil, payload: [], isTestMode: "true"),
-            .init(receivedAt: Date(), appID: UUID(), clientUser: "15", sessionID: "15", type: "test", floatValue: nil, payload: [], isTestMode: "true")
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "01", sessionID: "01", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "02", sessionID: "02", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "03", sessionID: "03", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "04", sessionID: "04", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "05", sessionID: "05", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "06", sessionID: "06", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "07", sessionID: "07", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "08", sessionID: "08", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "09", sessionID: "09", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "10", sessionID: "10", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "11", sessionID: "11", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "12", sessionID: "12", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "13", sessionID: "13", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "14", sessionID: "14", type: "test", floatValue: nil, payload: [:], isTestMode: "true"),
+            .init(receivedAt: Date(), appID: UUID(), clientUser: "15", sessionID: "15", type: "test", floatValue: nil, payload: [:], isTestMode: "true")
         ]
         
         for signal in signals {
@@ -56,7 +55,7 @@ final class TelemetryClientTests: XCTestCase {
     
     func testSignalEnrichers() throws {
         struct BasicEnricher: SignalEnricher {
-            func enrich(signalType: String, for clientUser: String?, floatValue: Double?) -> [String : String] {
+            func enrich(signalType: String, for clientUser: String?, floatValue: Double?) -> [String: String] {
                 ["isTestEnricher": "true"]
             }
         }
@@ -71,12 +70,12 @@ final class TelemetryClientTests: XCTestCase {
         let bodyItems = signalManager.processedSignals
         XCTAssertEqual(bodyItems.count, 1)
         let bodyItem = try XCTUnwrap(bodyItems.first)
-        XCTAssert(bodyItem.payload.contains("isTestEnricher:true"))
+        XCTAssert(bodyItem.payload["isTestEnricher"] == "true")
     }
     
     func testSignalEnrichers_precedence() throws {
         struct BasicEnricher: SignalEnricher {
-            func enrich(signalType: String, for clientUser: String?, floatValue: Double?) -> [String : String] {
+            func enrich(signalType: String, for clientUser: String?, floatValue: Double?) -> [String: String] {
                 ["item": "A", "isDebug": "banana"]
             }
         }
@@ -91,8 +90,8 @@ final class TelemetryClientTests: XCTestCase {
         let bodyItems = signalManager.processedSignals
         XCTAssertEqual(bodyItems.count, 1)
         let bodyItem = try XCTUnwrap(bodyItems.first)
-        XCTAssert(bodyItem.payload.contains("item:B")) // .send takes priority over enricher
-        XCTAssert(bodyItem.payload.contains("isDebug:banana")) // enricher takes priority over default payload
+        XCTAssert(bodyItem.payload["item"] == "B") // .send takes priority over enricher
+        XCTAssert(bodyItem.payload["isDebug"] == "banana") // enricher takes priority over default payload
     }
     
     func testSendsSignals_withAnalyticsImplicitlyEnabled() {
@@ -173,11 +172,11 @@ private class FakeSignalManager: SignalManageable {
     var processedSignals = [SignalPostBody]()
     
     @MainActor
-    func processSignal(_ signalType: String, parameters: [String : String], floatValue: Double?, customUserID: String?, configuration: TelemetryManagerConfiguration) {
+    func processSignal(_ signalType: String, parameters: [String: String], floatValue: Double?, customUserID: String?, configuration: TelemetryManagerConfiguration) {
         processedSignalTypes.append(signalType)
         let enrichedMetadata: [String: String] = configuration.metadataEnrichers
             .map { $0.enrich(signalType: signalType, for: customUserID, floatValue: floatValue) }
-            .reduce([String: String](), { $0.applying($1) })
+            .reduce([String: String]()) { $0.applying($1) }
         
         let payload = DefaultSignalPayload.parameters
             .applying(enrichedMetadata)
@@ -190,7 +189,7 @@ private class FakeSignalManager: SignalManageable {
             sessionID: configuration.sessionID.uuidString,
             type: "\(signalType)",
             floatValue: floatValue,
-            payload: payload.toMultiValueDimension(),
+            payload: payload,
             isTestMode: configuration.testMode ? "true" : "false"
         )
         processedSignals.append(signalPostBody)