UserWebsocketResponse message formatOn this pageResponse message formatFormat Format{ "id": "{id}", // callback ID "code": 1, // result: 0 = success; 1 = fail; 2 = listenKey invalid "msg": ""} Response Examples Success{"id": "123", "code": 0, "msg": "success"} Token Invalid{"id": "123", "code": 401, "msg": "token expire"}