Description: Push-based subscription from server to other system.
Reference: Subscription in FHIR specification.
Sample Request:
GET https://greathospital.com:8100/r4/sites/123/Sample Request:
GET https://greathospital.com:8100/r4/sites/123/Sample Request:
POST https://greathospital.com:8100/r4/sites/123/Subscription