Как разрешить зависимости autofa c в событии Owin startup.cs Identity server4

Question

Как разрешить зависимости в Startup.cs -IdentityServer4 SecurityTokenValidated событие в asp. net MVC 5.

  [assembly: OwinStartup(typeof(Startup))]
     public partial class Startup
        {
            public void Configuration(IAppBuilder app)
            {
    app.UseOpenIdConnectAuthentication(new OpenIdConnectAuthenticationOptions
            {
..
           Notifications = new OpenIdConnectAuthenticationNotifications
                {
                    SecurityTokenValidated = async context =>
                    {
                        //get dependencies
                        var scope= context.OwinContext.GetAutofacLifetimeScope();  //getting null scope
                        var dataanager = scope.Resolve<IDataManager>();  
      ..
    }

    }