{
  "plant-a": {
    "name": "plant-a",
    "url": "@server:plant-a",
    "server_uri": "http://opcua-server.simulator",
    "tags": {
      "ns=2;s=Temperature": {"tag_name": "Temperature", "frequency": 1000, "topics": ["raw_plant_a"]}
    }
  }
}