COMMANDS:

{
  "cmd":"system",
  "contents":
  {
    "action":"force_update",
    "channel":"beta"
  }
}


{
  "cmd":"system",
  "contents":
  {
    "action":"set_mqtt_log_level",
    "level":3
  }
}


{
  "cmd":"system",
  "contents":
  {
    "action":"restart"
  }
}
