{
  "event": "addDevice",
  "payload": {
    "id": "of:0000000000000005",
    "type": "switch",
    "online": true,
    "master": "onos-5",
    "labels": [
      "",
      "sw-E",
      "of:0000000000000005"
    ],
    "metaUi": {
      "x": 480,
      "y": 300
    }
  }
}