Переопределить AuthorizeAttribute в ASP.Net Core и ответить на статус Json

Я перехожу с ASP.Net Framework на ASP.Net Core.

В проекте ASP.Net Framework с веб-API 2 я могу настроить AuthorizeAttribute следующим образом:

public class ApiAuthorizeAttribute : AuthorizationFilterAttribute
{
    #region Methods

    /// <summary>
    ///     Override authorization event to do custom authorization.
    /// </summary>
    /// <param name="httpActionContext"></param>
    public override void OnAuthorization(HttpActionContext httpActionContext)
    {
        // Retrieve email and password.
        var accountEmail =
            httpActionContext.Request.Headers.Where(
                    x =>
                        !string.IsNullOrEmpty(x.Key) &&
                        x.Key.Equals("Email"))
                .Select(x => x.Value.FirstOrDefault())
                .FirstOrDefault();

        // Retrieve account password.
        var accountPassword =
            httpActionContext.Request.Headers.Where(
                    x =>
                        !string.IsNullOrEmpty(x.Key) &&
                        x.Key.Equals("Password"))
                .Select(x => x.Value.FirstOrDefault()).FirstOrDefault();

        // Account view model construction.
        var filterAccountViewModel = new FilterAccountViewModel();
        filterAccountViewModel.Email = accountEmail;
        filterAccountViewModel.Password = accountPassword;
        filterAccountViewModel.EmailComparision = TextComparision.Equal;
        filterAccountViewModel.PasswordComparision = TextComparision.Equal;

        // Find the account.
        var account = RepositoryAccount.FindAccount(filterAccountViewModel);

        // Account is not found.
        if (account == null)
        {
            // Treat the account as unthorized.
            httpActionContext.Response = httpActionContext.Request.CreateResponse(HttpStatusCode.Unauthorized);

            return;
        }

        // Role is not defined which means the request is allowed.
        if (_roles == null)
            return;

        // Role is not allowed 
        if (!_roles.Any(x => x == account.Role))
        {
            // Treat the account as unthorized.
            httpActionContext.Response = httpActionContext.Request.CreateResponse(HttpStatusCode.Forbidden);

            return;
        }

        // Store the requester information in action argument.
        httpActionContext.ActionArguments["Account"] = account;
    }

    #endregion

    #region Properties

    /// <summary>
    ///     Repository which provides function to access account database.
    /// </summary>
    public IRepositoryAccount RepositoryAccount { get; set; }

    /// <summary>
    ///     Which role can be allowed to access server.
    /// </summary>
    private readonly byte[] _roles;

    #endregion

    #region Constructor

    /// <summary>
    ///     Initialize instance with default settings.
    /// </summary>
    public ApiAuthorizeAttribute()
    {
    }

    /// <summary>
    ///     Initialize instance with allowed role.
    /// </summary>
    /// <param name="roles"></param>
    public ApiAuthorizeAttribute(byte[] roles)
    {
        _roles = roles;
    }

    #endregion
}

В моем настроенном AuthorizeAttribute я могу проверить, действительна ли учетная запись, и вернуть HttpStatusCode с сообщением клиенту.

Я пытаюсь сделать то же самое в ASP.Net Core, но не могу переопределить OnAuthorization.

Как я могу добиться того же, что и в ASP.Net Framework?

Спасибо,