When dealing with JSON Web Tokens WTS What is a claim?

The “aud” (audience) claim identifies the recipients that the JWT is intended for . Each principal intended to process the JWT MUST identify itself with a value in the audience claim.

JSON web tokens (JWTs) claims are pieces of information asserted about a subject . For example, an ID token (which is always a JWT) can contain a claim called name that asserts that the name of the user authenticating is “John Doe”.

The claims in a JWT are encoded as a JSON object that is digitally signed and optionally encrypted . Encryption for JWTs is described in a separate companion specification. The suggested pronunciation of JWT is the same as the English word “jot”.4 Oca 2011

The jti (JWT ID) claim provides a unique identifier for the JWT . The identifier value MUST be assigned in a manner that ensures that there is a negligible probability that the same value will be accidentally assigned to a different data object. The jti claim can be used to prevent the JWT from being replayed.13 Ara 2011