{
  "event": "addDevice",
  "payload": {
    "id": "of:0000000000000007",
    "type": "switch",
    "online": true,
    "master": "222.222.222.222",
    "labels": [
      "",
      "sw-G",
      "of:0000000000000007"
    ],
    "metaUi": {
      "x": 720,
      "y": 300
    }
  }
}