{
  "mqtt": {
    "service": "ttn",
    "protocol": "mqtt",
    "host": "eu.thethings.network",
    "user": "abc",
    "password": "xyz"
  },
  "data": {
    "ttn": [
      "temperature",
      "humidity",
      "motion",
      "light",
      "battery"
    ]
  },
  "metadata": [
    {
      "name": "location",
      "type": "string",
      "rest_endpoint": true
    },
    {
      "name": "contact",
      "type": "string"
    },
    {
      "name": "room",
      "type": "number",
      "rest_endpoint": true
    },
    {
      "name": "installation_date",
      "type": "timestamp"
    }
  ]
}