AddClaimsPrincipalFactory

            services.AddIdentity<ApplicationUser, ApplicationRole>(options =>
            {
                var allowed = options.User.AllowedUserNameCharacters + "ęóąśłżźćń";
                options.User.AllowedUserNameCharacters = allowed;
            }).AddEntityFrameworkStores<DomainModelContext>()
               .AddRoles<ApplicationRole>()
               .AddClaimsPrincipalFactory<ApplicationClaimsIdentityFactory>()
 
               .AddDefaultTokenProviders();

 public class ApplicationClaimsIdentityFactory : UserClaimsPrincipalFactory<ApplicationUser, ApplicationRole>
    {
        private readonly IHttpContextAccessor _httpContext;
 
        public ApplicationClaimsIdentityFactory(UserManager<ApplicationUser> userManager, RoleManager<ApplicationRole> roleManager, IOptions<IdentityOptions> options, IHttpContextAccessor httpContext) : base(userManager, roleManager, options)
        {
            _httpContext = httpContext;
        }
 
        public override async Task<System.Security.Claims.ClaimsPrincipal> CreateAsync(ApplicationUser user)
        {
            ClaimsPrincipal principal = await base.CreateAsync(user);
 
            ClaimsIdentity claimsIdentity = (ClaimsIdentity)principal.Identity;
 
 
            var ddd = claimsIdentity.Claims.Where(x => x.Type == "http://schemas.microsoft.com/ws/2008/06/identity/claims/name");
 
            foreach (var dd in ddd) {
                claimsIdentity.RemoveClaim(dd);
            }
 
            //claimsIdentity.Claims.ToList().RemoveAt(30);
 
            //claimsIdentity.Claims.Where(x => x.Type == )
            //claimsIdentity.AddClaim(new Claim("Deleted", user.Deleted.ToString().ToLower()));
 
 
            //_httpContext.HttpContext.User = principal;
 
 
            return principal;
        }
    }