# Payments

## Start the subscription

 - [POST /zephr/subscribe](https://developer.zuora.com/zephr-api-reference/zephr-public-api/payments/startsubscription.md): Uses the payment info captured by the payment provider drop-in UI and create a customer with a recurring payment.
When the payment provider responds successfully, the logged-in user will be temporarily granted all entitlements in the product's associated bundle.

## Update the subscription

 - [PATCH /zephr/subscriptions/:subscriptionId](https://developer.zuora.com/zephr-api-reference/zephr-public-api/payments/changesubscription.md): Updates an existing subscription to change the associated product and plan. Updating the subscription may modify the price of the subscription, and if so the balance will be billed immediately at a pro-rated amount. Parameters specific to the vendor may be specified to change the payment method for the subscription. Changing to a plan with a different billing frequency from the existing subscription is not supported for some payment providers (Braintree).