{
  "resourceType": "ResearchSubject",
  "id": "researchsubject-soa-1",
  "meta": {
    "profile": [
      "http://clinicalsite.org/fhir/StructureDefinition/researchsubject-soa"
    ]
  },
  "extension": [
    {
      "extension": [
        {
          "url": "status",
          "valueCode": "potential-candidate"
        },
        {
          "url": "period",
          "valuePeriod": {
            "start": "2017-12-01"
          }
        }
      ],
      "url": "http://clinicalsite.org/fhir/StructureDefinition/researchsubject-status-history"
    }
  ],
  "identifier": {
    "type": {
      "coding": [
        {
          "system": "http://clinicalsite.org/fhir/CodeSystem/researchsubject-identifier-type",
          "code": "SCREEN"
        }
      ]
    },
    "system": "http://clinicalsite.org/fhir/NamingSystem/[sponsor-id]/screening-identifier",
    "value": "1973"
  },
  "status": "candidate",
  "period": {
    "start": "2017-12-01"
  },
  "study": {
    "reference": "ResearchStudy/researchstudy-soa-1"
  },
  "individual": {
    "reference": "Patient/patient-soa-1"
  }
}