ID Token Structure
ID tokens follow the JSON Web Token (JWT) standard, which means that their basic structure conforms to the typical JWT Structure, and they contain standard JWT Claims asserted about the token itself. However, beyond what is required for JWT, ID tokens also contain claims asserted about the authenticated user, which are pre-defined by the OpenID Connect (OIDC) protocol, and are thus known as standard OIDC claims. Some standard OIDC claims include:
You control which OIDC claims are included in the ID token consumed by your application by including specific OpenID Connect Scopes in a parameter when you request tokens while authenticating users. To learn how to request an ID token, see Get ID Tokens.