Security Event Token

Security Event Token (SET) RFC 8417

  This specification defines the Security Event Token (SET) data
  structure.  A SET describes statements of fact from the perspective
  of an issuer about a subject.  These statements of fact represent an
  event that occurred directly to or about a security subject, for
  example, a statement about the issuance or revocation of a token on
  behalf of a subject.  This specification is intended to enable
  representing security- and identity-related events.  A SET is a JSON
  Web Token (JWT), which can be optionally signed and/or encrypted.
  SETs can be distributed via protocols such as HTTP.