{
  "event": "addInstance",
  "payload": {
    "id": "onos-slave",
    "ip": "192.168.0.11",
    "online": false,
    "uiAttached": false,
    "switches": 17,
    "labels": [
      "onos-slave",
      "192.168.0.11"
    ]
  }
}