{
  "event": "addDevice",
  "payload": {
    "id": "of:00000000000000015",
    "type": "-unmatched-",
    "online": true,
    "master": "ONOS-B",
    "labels": [
      "",
      "-unmatched-",
      "of:0000000000000015"
    ],
    "metaUi": {
      "x": 600,
      "y": 500
    }
  }
}