{

"resourceType": "MessageHeader",
"id": "1cbdfb97-5859-48a4-8301-d54eab818d68",
"eventCoding": {
  "system": "http://example.org/fhir/message-events",
  "code": "admin-notify"
},
"destination": [
  {
    "name": "Acme Message Gateway",
    "target": {
      "reference": "Device/example"
    },
    "endpoint": "llp:10.11.12.14:5432",
    "receiver": {
      "reference": "http://acme.com/ehr/fhir/Practitioner/2323-33-4"
    }
  }
],
"sender": {
  "reference": "Organization/1"
},
"enterer": {
  "reference": "Practitioner/example"
},
"author": {
  "reference": "Practitioner/example"
},
"source": {
  "name": "Acme Central Patient Registry",
  "software": "FooBar Patient Manager",
  "version": "3.1.45.AABB",
  "contact": {
    "system": "phone",
    "value": "+1 (555) 123 4567"
  },
  "endpoint": "llp:10.11.12.13:5432"
},
"reason": {
  "coding": [
    {
      "system": "http://terminology.hl7.org/CodeSystem/message-reasons-encounter",
      "code": "admit"
    }
  ]
},
"response": {
  "identifier": "5015fe84-8e76-4526-89d8-44b322e8d4fb",
  "code": "ok"
},
"focus": [
  {
    "reference": "Patient/example"
  }
],
"definition": "http:////acme.com/ehr/fhir/messagedefinition/patientrequest",
"meta": {
  "tag": [
    {
      "system": "http://terminology.hl7.org/CodeSystem/v3-ActReason",
      "code": "HTEST",
      "display": "test health data"
    }
  ]
}

}