Zoho Subscriptions was rolled up into the Zoho Billing product as of June 2024. We should update all zoho_subscriptions endpoints to conform to the new Zoho Billing endpoints, as Zoho Subscriptions has been deprecated.
I've updated the app name and the test request for now, and all components should be updated as the majority of endpoints have changed.
https://www.zoho.com/billing/api/v1/introduction/?from_zsm=true