请问这个json格式错在哪里？ 老是这个错误信息：Received message: ["NOTICE","ERROR: bad msg: unparseable message"]

Sending message: {"kind": 1, "content": "\u65e5\u672c\u306e\u6587\u5316\u306f\u3068\u3066\u3082\u8208\u5473\u6df1\u3044\u3067\u3059", "tags": [], "pubkey": "08f7b1411ba5f9e47cc9ca2ea6ec04bc198adc43b672ed3569ea906ae70491fb", "created_at": 1741249394, "id": "3f7f9063-fdb5-4465-ae8b-fca778451f49", "sig": "f8c74f806144fd911f9c4fcf6fc4e150430e07f5b99f3d79cf437ef7bee8a570822ac05a865145fed412ddbebc759872ab6c8a8c991f8a10dcbd43f614f96505"}

#asknostr