Device report and control command format

JSON format as following:

{
    "cmd" : "write",           //command type
    "model" : "ctrl_neutral1",   //device model
    "sid" : "112316",          //device ID
    "short_id" : 4343,         //zigbee device short id
    "token" : "8",             //token
    "data" : "{\" channel_0\":\"on\"}"    //data
}