public static List<InMemoryUser> Get()
{
    return new List<InMemoryUser>
       {
           new InMemoryUser
           {
               Username = "user@domain.com",
               Password = "password",
               Subject = "user@domain.com",
               Claims = new[]
                        {
                            new Claim(Constants.ClaimTypes.Id, "96cddc1de66641829237b7f09869b1c8"),
                            new Claim(Constants.ClaimTypes.Name, "Some Full name example
                        }
           },
       };
}

((User as System.Security.Claims.ClaimsPrincipal).Identities.First() as System.Security.Claims.ClaimsIdentity).Claims.ToList()
Count = 10
    [0]: {iss: https://localhost:44375}
    [1]: {aud: https://localhost:44375/resources}
    [2]: {exp: 1468920204}
    [3]: {nbf: 1468916604}
    [4]: {client_id: my_clientid}
    [5]: {scope: openid}
    [6]: {http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier: user@domain.com}
    [7]: {http://schemas.microsoft.com/ws/2008/06/identity/claims/authenticationinstant: 1468916604}
    [8]: {http://schemas.microsoft.com/identity/claims/identityprovider: idsrv}
    [9]: {http://schemas.microsoft.com/claims/authnmethodsreferences: password}

{
  "iss": "https://localhost:44375",
  "aud": "https://localhost:44375/resources",
  "exp": 1468921471,
  "nbf": 1468917871,
  "client_id": "my_clientid,
  "scope": "openid",
  "sub": "user@domain.com",
  "auth_time": 1468917871,
  "idp": "idsrv",
  "amr": [
    "password"
  ]
}