{
  "vessels": {
    "urn:mrn:imo:mmsi:230099999": {
      "mmsi": "230099999",
      "notifications": {
        "steering": {
          "value": {
            "method": [
              "sound",
              "visual"
            ],
            "state": "alarm",
            "message": "Steering system failure"
          },
          "timestamp": "2017-01-23T14:24:17Z",
          "$source": "a.suitable.path"
        }
      }
    }
  },
  "version": "1.0.0",
  "self": "vessels.urn:mrn:imo:mmsi:230099999"
}