{description: Convert a prescription in FHIR format into the canonicalised HL7 V3 signature fragments which should be signed by the prescriber., package_name: uk.nhsdigital.medicines.r4, name: Prepare Message, type: 'false', package_version: 2.1.8-alpha, class: operation, kind: operation, url: 'https://fhir.nhs.uk/OperationDefinition/MessageHeader-prepare-message', version: 4.0.1}