{
  "id": "UserContext1",
  "type": "UserContext",
  "refActivity": {
    "type": "Text",
    "value": "UserActivity1"
  },
  "location": {
    "type": "geo:json",
    "value": {
      "type": "Point",
      "coordinates": [
        -4.754444444,
        41.640833333
      ]
    }
  },
  "refUser": {
    "type": "Text",
    "value": "User1"
  },
  "refUserDevice": {
    "type": "Text",
    "value": "Device1"
  }
}