WristwatchShutdownNoticeMessage(手表关机通知)

{
    "msgType": 0,
    "ackId": 0,
    "msgId": 0,
    "recvId": "string",
    "sendId": "string",
    "sendTime": 0,
    "content": {
        "cid": "string",
        "did": 0
    }
}