In the Bundle resource for FHIR stu3 , the signature attribute identifies the Digital Signature
"signature":
"identifier":
"link": [
{
"url": "https://example.com/base/MedicationRequest?patient=347&_include=MedicationRequest.medication",
"relation": "self"
},
{
"url": "https://example.com/base/MedicationRequest?patient=347&searchId=ff15fd40-ff71-4b48-b366-09c706bed9d0&page=2",
"relation": "next"
}
]
"signature":
"entry": [
{
"search": {
"score": 1,
"mode": "match"
},
"resource": {
"resourceType": "MedicationRequest",
"text": {
"status": "generated",
"div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: 3123</p><p><b>intent</b>: order</p><p><b>medication</b>: <a>Medication/example</a></p><p><b>subject</b>: <a>Patient/347</a></p></div>"
},
"medicationReference": {
"reference": "Medication/example"
},
"intent": "order",
"id": "3123",
"subject": {
"reference": "Patient/347"
}
},
"fullUrl": "https://example.com/base/MedicationRequest/3123"
},
{
"search": {
"mode": "include"
},
"resource": {
"resourceType": "Medication",
"text": {
"status": "generated",
"div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: example</p></div>"
},
"id": "example"
},
"fullUrl": "https://example.com/base/Medication/example"
}
]
"total": 3
"type": "searchset"