public SubscriptionController(ISubscriptionService subscriptionService, ISubscriptionApprovalService subscriptionApprovalService, IUnsubscriptionProvider unsubscriptionProvider,
IEmailHashValidator emailHashValidator, IIssueInfoProvider issueInfoProvider, INewsletterInfoProvider newsletterInfoProvider)
{
this.subscriptionService = subscriptionService;
this.subscriptionApprovalService = subscriptionApprovalService;
this.unsubscriptionProvider = unsubscriptionProvider;
this.emailHashValidator = emailHashValidator;
this.issueInfoProvider = issueInfoProvider;
this.newsletterInfoProvider = newsletterInfoProvider;
}