{
  "resourceType": "Provenance",
  "id": "signature",
  "target": [
    {
      "reference": "DocumentReference/example/_history/4"
    }
  ],
  "recorded": "2015-08-27T08:39:24+10:00",
  "authorization": [
    null
  ],
  "activity": {
    "coding": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/v3-DocumentCompletion",
        "code": "AU",
        "display": "authenticated"
      }
    ]
  },
  "agent": [
    {
      "type": {
        "coding": [
          {
            "system": "http://terminology.hl7.org/CodeSystem/contractsignertypecodes",
            "code": "VERF"
          }
        ]
      },
      "who": {
        "identifier": {
          "system": "urn:ietf:rfc:3986",
          "value": "mailto://hhd@ssa.gov"
        }
      }
    }
  ],
  "signature": [
    {
      "type": [
        {
          "system": "urn:iso-astm:E1762-95:2013",
          "code": "1.2.840.10065.1.12.1.5",
          "display": "Verification Signature"
        }
      ],
      "when": "2015-08-27T08:39:24+10:00",
      "who": {
        "reference": "Practitioner/xcda-author"
      },
      "targetFormat": "application/fhir+xml",
      "sigFormat": "application/signature+xml",
      "data": "Li4u"
    }
  ],
  "meta": {
    "tag": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/v3-ActReason",
        "code": "HTEST",
        "display": "test health data"
      }
    ]
  }
}