{
  "event": "addDevice",
  "payload": {
    "id": "of:0000ffffffff0002",
    "type": "switch",
    "online": false,
    "master": "192.168.56.101",
    "labels": [
      "",
      "sw-2",
      "0000ffffffff0002"
    ],
    "metaUi": {
      "x": 142,
      "y": 503
    }
  }
}