OptionalentityOptionalmetadataFor credential events, this is the credential schema name. For presentation events, this is the proof schema name. For all other entity types, it is the entity name.
OptionalorganisationOptionaltargetIdentifier UUID of the external participant in the interaction, if applicable. For credential events, this is the counterpart's identifier (holder when the system is issuer, issuer when the system is holder). For presentation events, this is the holder's identifier when the system is verifier, or the verifier's identifier when the system is holder.
OptionaluserIdentifier of the user who triggered the event.
Structured metadata attached to the event. The variant depends on the type.