diff --git a/native/cpp/CommonCpp/grpc/grpc_client/src/lib.rs b/native/cpp/CommonCpp/grpc/grpc_client/src/lib.rs
--- a/native/cpp/CommonCpp/grpc/grpc_client/src/lib.rs
+++ b/native/cpp/CommonCpp/grpc/grpc_client/src/lib.rs
@@ -272,3 +272,19 @@
     Err(handle_unexpected_registration_response(message))
   }
 }
+
+fn handle_token_response(
+  message: Option<RegistrationResponseMessage>,
+) -> Result<String, Status> {
+  if let Some(RegistrationResponseMessage {
+    data:
+      Some(PakeLoginResponse(PakeLoginResponseStruct {
+        data: Some(AccessToken(access_token)),
+      })),
+  }) = message
+  {
+    Ok(access_token)
+  } else {
+    Err(handle_unexpected_registration_response(message))
+  }
+}