{
    "@context": {
      "ngsi-ld": "http://uri.etsi.org/ngsi-ld/",    
      "id": "@id",
      "type": "@type",
      "value": "http://uri.etsi.org/ngsi-ld/hasValue",
      "object": {
        "@id": "http://uri.etsi.org/ngsi-ld/hasObject",
        "@type":"@id"
      },
      "Property": "http://uri.etsi.org/ngsi-ld/Property",
      "Relationship": "http://uri.etsi.org/ngsi-ld/Relationship",
      "DateTime": "http://uri.etsi.org/ngsi-ld/DateTime",
      "Date": "http://uri.etsi.org/ngsi-ld/Date",
      "Time": "http://uri.etsi.org/ngsi-ld/Time",
      "createdAt": {
        "@id": "http://uri.etsi.org/ngsi-ld/createdAt",
        "@type": "DateTime"
      },
      "modifiedAt": {
        "@id": "http://uri.etsi.org/ngsi-ld/modifiedAt",
        "@type": "DateTime"
      },
      "observedAt": {
        "@id": "http://uri.etsi.org/ngsi-ld/observedAt",
        "@type": "DateTime"
      },
      "datasetId": {
        "@id": "http://uri.etsi.org/ngsi-ld/datasetId",
        "@type": "@id"
      },
      "instanceId": {
        "@id": "http://uri.etsi.org/ngsi-ld/instanceId",
        "@type": "@id"
      },
      "unitCode": "http://uri.etsi.org/ngsi-ld/unitCode",
      "location": "http://uri.etsi.org/ngsi-ld/location",
      "observationSpace": "http://uri.etsi.org/ngsi-ld/observationSpace",
      "operationSpace": "http://uri.etsi.org/ngsi-ld/operationSpace",
      "GeoProperty": "http://uri.etsi.org/ngsi-ld/GeoProperty",
      "TemporalProperty": "http://uri.etsi.org/ngsi-ld/TemporalProperty",
      "ContextSourceRegistration": "http://uri.etsi.org/ngsi-ld/ContextSourceRegistration",
      "Subscription": "http://uri.etsi.org/ngsi-ld/Subscription", 
      "Notification": "http://uri.etsi.org/ngsi-ld/Notification",
      "ContextSourceNotification": "http://uri.etsi.org/ngsi-ld/ContextSourceNotification",
      "title": "http://uri.etsi.org/ngsi-ld/title",
      "detail": "http://uri.etsi.org/ngsi-ld/detail",
      "idPattern": "http://uri.etsi.org/ngsi-ld/idPattern",
      "name": "http://uri.etsi.org/ngsi-ld/name",
      "description": "http://uri.etsi.org/ngsi-ld/description",
      "information": "http://uri.etsi.org/ngsi-ld/information",
      "observationInterval": "http://uri.etsi.org/ngsi-ld/observationInterval",
      "managementInterval": "http://uri.etsi.org/ngsi-ld/managementInterval",
      "expires": {
        "@id": "http://uri.etsi.org/ngsi-ld/expires",
        "@type": "DateTime"
      },
      "endpoint": "http://uri.etsi.org/ngsi-ld/endpoint",
      "entities": "http://uri.etsi.org/ngsi-ld/entities",
      "properties": {
        "@id": "http://uri.etsi.org/ngsi-ld/properties",
        "@type": "@id"
      },
      "relationships": {
        "@id": "http://uri.etsi.org/ngsi-ld/relationships",
        "@type": "@id"
      },
      "start": {
        "@id": "http://uri.etsi.org/ngsi-ld/start",
        "@type": "DateTime"
      },
      "end": {
        "@id": "http://uri.etsi.org/ngsi-ld/end",
        "@type": "DateTime"
      },
      "watchedAttributes":{
        "@id": "http://uri.etsi.org/ngsi-ld/watchedAttributes",
        "@type": "@id"
      },
      "timeInterval": "http://uri.etsi.org/ngsi-ld/timeInterval",
      "q": "http://uri.etsi.org/ngsi-ld/q",
      "geoQ": "http://uri.etsi.org/ngsi-ld/geoQ",
      "csf": "http://uri.etsi.org/ngsi-ld/csf",
      "isActive": "http://uri.etsi.org/ngsi-ld/isActive",
      "notification": "http://uri.etsi.org/ngsi-ld/notification",
      "status": "http://uri.etsi.org/ngsi-ld/status",
      "throttling": "http://uri.etsi.org/ngsi-ld/throttling",
      "temporalQ": "http://uri.etsi.org/ngsi-ld/temporalQ",
      "geometry": "http://uri.etsi.org/ngsi-ld/geometry",
      "coordinates": "http://uri.etsi.org/ngsi-ld/coordinates",
      "georel": "http://uri.etsi.org/ngsi-ld/georel",
      "geoproperty": "http://uri.etsi.org/ngsi-ld/geoproperty",
      "attributes": {
        "@id": "http://uri.etsi.org/ngsi-ld/attributes",
        "@type": "@id"
      },
      "format": "http://uri.etsi.org/ngsi-ld/format",
      "timesSent": "http://uri.etsi.org/ngsi-ld/timesSent",
      "lastNotification":{
        "@id": "http://uri.etsi.org/ngsi-ld/lastNotification",
        "@type": "DateTime"
      },
      "lastFailure":{
        "@id": "http://uri.etsi.org/ngsi-ld/lastFailure ",
        "@type": "DateTime"
      },
      "lastSuccess":{
        "@id": "http://uri.etsi.org/ngsi-ld/lastSuccess",
        "@type": "DateTime"
      },
      "uri": "http://uri.etsi.org/ngsi-ld/uri",
      "accept": "http://uri.etsi.org/ngsi-ld/accept",
      "success": {
        "@id": "http://uri.etsi.org/ngsi-ld/success",
        "@type": "@id"
      },
      "errors": "http://uri.etsi.org/ngsi-ld/errors",
      "error": "http://uri.etsi.org/ngsi-ld/error",
      "entityId": {
        "@id": "http://uri.etsi.org/ngsi-ld/entityId",
        "@type": "@id"
      },
      "updated": "http://uri.etsi.org/ngsi-ld/updated",
      "unchanged": "http://uri.etsi.org/ngsi-ld/unchanged",
      "attributeName": "http://uri.etsi.org/ngsi-ld/attributeName",
      "reason": "http://uri.etsi.org/ngsi-ld/reason",
      "timerel": "http://uri.etsi.org/ngsi-ld/timerel",
      "time": {
        "@id": "http://uri.etsi.org/ngsi-ld/time",
        "@type": "DateTime"
      },
      "endTime": {
        "@id": "http://uri.etsi.org/ngsi-ld/endTime",
        "@type": "DateTime"
      },
      "timeproperty": "http://uri.etsi.org/ngsi-ld/timeproperty",
      "subscriptionId": {
        "@id": "http://uri.etsi.org/ngsi-ld/subscriptionId",
        "@type": "@id"
      },
      "notifiedAt":{
        "@id": "http://uri.etsi.org/ngsi-ld/notifiedAt",
        "@type": "DateTime"
      },
      "data": "http://uri.etsi.org/ngsi-ld/data",
      "triggerReason": "http://uri.etsi.org/ngsi-ld/triggerReason",
      "values":{
          "@id": "http://uri.etsi.org/ngsi-ld/hasValues",
          "@container": "@list"
      },
      "objects":{
          "@id": "http://uri.etsi.org/ngsi-ld/hasObjects",
	  "@type": "@id",
	  "@container": "@list"
      }
    }
}