Name	Flags	Card.	Type	Description & Constraints
Signature			Element	A digital Signature - XML DigSig, JWT, Graphical image of signature, etc. Elements defined in Ancestors: id, extension
type	Σ	1..*	Coding	Indication of the reason the entity signed the object(s) Signature Type Codes ( Preferred)
when	Σ	1..1	instant	When the signature was created
who[x]	Σ	1..1		Who signed
whoUri			uri
whoReference			Reference( Practitioner | RelatedPerson | Patient | Device | Organization)
onBehalfOf[x]	Σ	0..1		The party represented
onBehalfOfUri			uri
onBehalfOfReference			Reference( Practitioner | RelatedPerson | Patient | Device | Organization)
contentType	Σ	0..1	code	The technical format of the signature MimeType ( Required)
blob		0..1	base64Binary	The actual signature content (XML DigSig. JWT, picture, etc.)
Documentation for this format