{
  "vessels": {
    "urn:mrn:imo:mmsi:311982330": {
      "mmsi": "311982330",

      "navigation": {
        "courseOverGroundMagnetic": {
          "$source": "sources.gps_0183_RMC",
          "timestamp": "very poor timestamp with a Z",
          "value": 0.1
        }
      }
    }
  },
  "version": "1.0.0",
  "self": ""
}