{
  "event": "updateInstance",
  "payload": {
    "id": "onos-master",
    "ip": "192.168.0.7",
    "online": true,
    "uiAttached": true,
    "switches": 300,
    "labels": [
      "onos-master",
      "192.168.0.7"
    ]
  }
}