{
  "event": "addDevice",
  "payload": {
    "id": "of:0000ffffffff0003",
    "type": "switch",
    "online": false,
    "master": "myInstB",
    "location": {
      "type": "latlng",
      "lat": 40.7127,
      "lng": -74.0059
    },
    "labels": [
      "",
      "sw-3",
      "0000ffffffff0003"
    ],
    "metaUi": {
      "x": 800,
      "y": 280
    }
  }
}