- Observation
{ 
  "resourceType": "Observation",    
    "id": "3",
    "meta": {
        "versionId": "1",
        "lastUpdated": "2018-08-21T11:09:22.219+02:00"
    },
    "status": "final",
    "code": {
        "coding": [
            {
                "system": "Test",
                "code": "K_LEUK"
            }
        ]
    },
    "subject": {
        "reference": "Patient/1"
    },
    "context": {
        "reference": "Encounter/2"
    },
    "valueQuantity": {
        "value": 7.02
    }
}

- Patient
{
    "resourceType": "Patient",
    "id": "1",
    "meta": {
        "versionId": "2",
        "lastUpdated": "2018-08-21T11:09:25.742+02:00"
    },
    "text": {
        "status": "generated",
        "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><table class=\"hapiPropertyTable\"><tbody><tr><td>Identifier</td><td>0004fbcdb1ec87c92bbd3e51f2855ee16a00b63d97e04cf2d3a3dc963ab5492f</td></tr></tbody></table></div>"
    },
    "extension": [
        {
            "url": "http://hl7.org/fhir/StructureDefinition/List",
            "valueReference": {
                "reference": "List/4"
            }
        }
    ],
    "identifier": [
        {
            "system": "Test",
            "value": "0004fbcdb1ec87c92bbd3e51f2855ee16a00b63d97e04cf2d3a3dc963ab5492f"
        }
    ]
}