I have some code which needs to read the contents of a JWT token.

var handler = new System.IdentityModel.Tokens.Jwt.JwtSecurityTokenHandler();
var token = handler.ReadJwtToken(secret);

When debugging I can observe the secret to have the following payload:

{
  "iss": "https://my.site.com/trust",
  "nbf": 1714558573,
  "iat": 1714558573,
  "exp": 1714562173,
  "aud": "https://api.site.com",
  "scope": [
    "openid",
    "profile",
    "offline_access"
  ],
  "amr": [
    "asos"
  ],
  "client_id": "TestClient",
  "sub": "125",
  "auth_time": 1714558568,
  "idp": "site",
  "sid": "BC8DAC5545656C7E022F20B08D45BC56",
  "aid": "anonymousId60c95f5b-8b71-47a1-af7f-fc5e34f573ae",
  "sess": "sessionId3820377f-b412-4938-8f47-31d37b663a17",
  "cgd": "57f60f1e-02ad-4a90-a728-9b5e6ea5e263",
  "jti": "05093E7CEBC67C601C4DDC90B6C34FB9"
}

However, observing the token variable shows it only contains the following claims:

"iss: https://my.site.com/trust"
"iat: 1714558573"
"aud: https://api.site.com"
"amr: asos"
"sub: 125"
"idp: site"
"aid: anonymousId60c95f5b-8b71-47a1-af7f-fc5e34f573ae"
"cgd: 57f60f1e-02ad-4a90-a728-9b5e6ea5e263"
"jti: 05093E7CEBC67C601C4DDC90B6C34FB9"

This list seems pretty random to me – some are well-known JWT claims whereas others are my custom claims. But other claims from my payload are omitted entirely.

How can I make JwtSecurityTokenHandler build a complete list of claims from my token?