diff --git a/app/__init__.py b/app/__init__.py
index 85284aa..cb61c7f 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -55,7 +55,7 @@ def do_p2_im_message_receive_v1(data: P2ImMessageReceiveV1) -> None:
     message_id = data.event.message.message_id
     thread_id = data.event.message.thread_id
 
-    data = lark.JSON.marshal(data)
+    data = json.loads(lark.JSON.marshal(data))
     print("=====================================")
     print(f"thread_id: {thread_id}")
     print(f"thread_id: {message_id}")