{
  "event": "addDevice",
  "payload": {
    "id": "of:0000ffffffff000b",
    "type": "switch",
    "online": false,
    "master": "ONOS-2",
    "x-location": {
      "type": "lnglat",
      "lat": 37.7833,
      "lng": -120.4167
    },
    "labels": [
      "",
      "sw-B",
      "0000ffffffff000b"
    ],
    "metaUi": {
      "x": 720,
      "y": 300
    }
  }
}