Java Class based on Enum fileds

I'm dealing here with JWT and setting up custom fields. All those custom fields are described in Enum

public enum JwtFields {
    userId,
    manyOtherCustomFieldsBellow,
    blaBlaBla
}

so whenever I create token instead of passing strings for the keys, I'm using an enum as it is faster and safer.

Claims claims = Jwts.claims().setSubject(userId);
claims.put(JwtFields.someCustomFieldFromEnum.name(), "someValue")

Now, once I check that received token is valid and all necessary custom fields are present I want to deserialise it to some TokenDecoded class and attach it to request payload, so whenever I'm processing request I will have all values and fields from the JWT token.

However, that deserialise class pretty much contains all fields from Enum, and if tomorrow I will add new filed to enum, ill have to also manually update my TokenDecoded class to include that new custom filed too

The question: How can I make this TokenDecoded class to be based on enum fields, so if I add a new field to Enum, it will be automatically present in TokenDecoded. Is there reflection involved? or it could be achieved simpler?