public async Task <ActionResult> ViewContacts(AdvancedSearchViewModel viewModel)
        {
            if (viewModel.AccountID == 0)
            {
                viewModel.AccountID = this.Identity.ToAccountID();
            }
            AdvancedSearchResponse <ContactAdvancedSearchEntry> response = await advancedSearchService.ViewContactsAsync(new AdvancedSearchRequest <ContactAdvancedSearchEntry>()
            {
                SearchViewModel  = viewModel,
                AccountId        = viewModel.AccountID,
                RoleId           = this.Identity.ToRoleID(),
                RequestedBy      = this.Identity.ToUserID(),
                IsAdvancedSearch = true,
                ViewContacts     = true
            });

            Guid guid = Guid.NewGuid();

            if (response.ContactIds != null)
            {
                AddCookie("ContactsGuid", guid.ToString(), 1);
                var contactIds = response.ContactIds;
                cachingService.StoreSavedSearchContactIds(guid.ToString(), contactIds);
            }
            return(Json(new
            {
                success = true,
                response = guid.ToString()
            }, JsonRequestBehavior.AllowGet));
        }