ChatApi/Models/UserData.cs

using System.Security.Claims;

namespace ChatApi.Models
{
    public class UserData
    {
        private UserData()
        {
        }

        public string Email { get; set; }
        public string Name { get; set; }

        public static UserData Create(ClaimsPrincipal user)
        {
            var email = user.FindFirst(ClaimTypes.Email)?.Value
                        ?? user.FindFirst("email")?.Value;

            var name = user.FindFirst(ClaimTypes.Name)?.Value
                       ?? user.FindFirst("name")?.Value;


            return new UserData
            {
                Email = email,
                Name = name
            };
        }
    }
}