消息回调

{
    "data": {
        "appinfo": "2961317182029624734",
        "at_list": [],
        "cdn_data": "CgoIABIGCgQ0MTY1",
        "content": "4165",
        "content_type": 2,
        "conversation_id": "S:16888xxxxxxxxxxxxxxxxxx",
        "is_pc": 0,
        "local_id": "7054",
        "receiver": "1688xxxxxxxxxxx",
        "send_time": "1687686011",
        "sender": "788130xxxxxxx",
        "sender_name": "Hanson",
        "server_id": "1046194"
    },
    "type": "WW_RECV_TEXT_MSG",
    "client_id": 1,
    "user_id": "16888xxxxxxxx"
}