curl -v localhost:1026/v2/subscriptions -s -S \
-H 'Content-Type: application/json' \
-H 'fiware-service: default' \
-H 'fiware-servicepath: /' \
-d '{
  "description": "A subscription to get info about Room1",
  "subject": {
    "entities": [
      {
        "id": "Room1",
        "type": "Room"
      }
    ],
    "condition": {
      "attrs": [
        "pressure"
      ]
    }
  },
  "notification": {
    "http": {
      "url": "http://sth-comet:8666/notify"
    },
    "attrs": [
      "temperature"
    ]
  },
  "attrsFormat": "legacy",
  "expires": "2040-01-01T14:00:00.00Z"
}'