{
  "context": "vessels.urn:mrn:signalk:uuid:c0d79334-4e25-4245-8892-54e8ccc8021d",
  "updates": [
    {
      "source": {
        "label": "ttyUSB0",
        "type": "NMEA0183",
        "talker": "GP",
        "sentence": "MOB"
      },
      "timestamp": "2017-08-15T16:00:05.200Z",
      "values": [
        {
          "path": "notifications.mob",
          "value": {
            "message": "MOB",
            "state": "emergency",
            "method": [
              "visual",
              "sound"
            ]
          }
        }
      ]
    },
    {
      "source": {
        "label": "ttyUSB0",
        "type": "NMEA0183",
        "talker": "GP",
        "sentence": "MOB"
      },
      "timestamp": "2017-08-15T16:00:05.538Z",
      "values": [
        {
          "path": "notifications.mob",
          "value": null
        }
      ]
    }
  ]
}