anchor.diff:  + Request (application/json)
   
           {
  -          "subject": {
  +          "dataProvided": {
               "entities": [
                 {
                   "id": "room2",
  
positive.code:         [
            {
              "id": "abcdefg",
              "subject": {
                "entities": [
                  {
                    "id": "Bcn_Welt",
  
negative.code:               }
              ],
              "attributes": [
                "relativeHumidity"
              ]
            },
            "source": {
              "endPoint": "http://localhost:1234",
              "name": "Relative Humidity Context Source" 
            }
          }
  
  + Response 201
  