{
  "event": "addDevice",
  "payload": {
    "id": "of:0000000000000005",
    "type": "roadm_otn",
    "online": true,
    "master": "ONOS",
    "labels": [
      "",
      "roadm_otn",
      "of:0000000000000005"
    ],
    "metaUi": {
      "x": 300,
      "y": 300
    }
  }
}