I am implementing the Recurring Payments and Subscriptions APIs. I want to pass additional information while creating the subscription (e.g., email), and I want this additional information (email) to be received in the webhook so that I can update my system with that email. Alternatively, I want to retrieve the email in the payment notification listener, which is the webhook.
How do I find out to whom the recurring payments belong?
Hopefully, you understand my problem.