{
  "event": "updateMeta",
  "sid": 11,
  "payload": {
    "id": "62:4F:65:BF:FF:B3/-1",
    "class": "host",
    "memento": {
      "xpc": 57.3,
      "ypc": 24.86,
      "and": "other properties the UI wishes to remember..."
    }
  }
}