tencent cloud

https://xxxxxx/v4/group_open_http_svc/send_broadcast_msg?sdkappid=88888888&identifier=admin&usersig=xxx&random=99999999&contenttype=json

{
    "From_Account": "test",  // Specify the message sender (optional)
    "Random": 8912345, // A random number. If the random numbers of two messages are the same within five minutes, they are considered to be the same message.
    "MsgBody": [ 
        {
            "MsgType": "TIMCustomElem", // Custom message
            "MsgContent": {
                "Data": "{ \\"type\\":1, \\"content\\":\\"hello world\\"}"
            }
        }
    ],
    "CloudCustomData": "your cloud custom data"
}

{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 0,
    "MsgSeq": 1283
}