http://hl7.org/fhir/StructureDefinition/questionnaireresponse-signature|5.2.0

Represents a wet or electronic signature for either the form overall or for the question or item it's associated with.

element_id	types
Extension
Extension.extension
Extension.url
Extension.value[x]	Signature
Extension
Extension.id	http://hl7.org/fhirpath/System.String
Extension.extension	Extension
Extension.url	http://hl7.org/fhirpath/System.String
Extension.value[x]	Signature