腾讯云手动下发指令到设备-用于设备调试打开腾讯云API Explorer，Publish Msghttps://console.cloud.tencent.com/api/explorer?Product=iotcloud&Version=2021-04-08&Action=PublishMessagehttps://console.cloud.tencent.com/api/explorer?Product=iotcloud&Version=2021-04-08&Action=PublishMessage