JWT Token
Standard JWT Claims (RFC 7519)
issIssuer β who issued the token
subSubject β who the token refers to
audAudience β who the token is intended for
expExpiration time (Unix timestamp)
nbfNot before (Unix timestamp)
iatIssued at (Unix timestamp)
jtiJWT ID β unique identifier
algAlgorithm (header) β e.g. HS256, RS256
typType (header) β usually "JWT"