config = {
  "wifi": {
    "SSID": "****",
    "password": "****"
  },
  "gateway": {
    "mqtt_server": {
       "server": "192.168.1.1",
       "port": 8888,
       "username": "****",
       "password": "****",
       "keep_alive": 60,
       "wait_to_reconnect": 5
    }
  }
}