{
  "event": "addDevice",
  "payload": {
    "id": "of:0000ffffffff000b",
    "type": "switch",
    "online": false,
    "master": "onos-slave",
    "labels": [
      "",
      "sw-B",
      "0000ffffffff000b"
    ],
    "metaUi": {
      "x": 52,
      "y": 262
    }
  }
}