# Subscribe to webhooks (optional)

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You can subscribe to Zoom's monetization webhooks to receive notifications about changes to users' subscriptions.

For example, that a trial subscription has been converted to a paid subscription or that a subscription has been renewed.

## Prerequisite

-   You have set up a [payment account](/docs/distribute/monetization/payment-account/).
-   You have created a user-managed [general app](/docs/build-flow/create-oauth-apps/).
-   You have created at least one [pricing plan](/docs/distribute/monetization/pricing-plans/).

## Procedure

To subscribe to monetization events and receive notifications, ensure you are in the build flow **Production** view, go to **Features** > **Access** > **Event Subscription** > **Add New Event Subscription** > **Add Events**.

![](/img/monetization-event-subscription.png)

![](/img/monetization-add-events.png)

Select the **System Events** tab, and then **Monetization**.

> The **System Events** tab is only available after you have created a pricing plan. If you don't see **System Events** displayed, create a [pricing plan](/docs/distribute/monetization/pricing-plans/) first.

![](/img/monetization-sysem-events2.png)

**Note:** We recommend that, at a minimum, you subscribe to these events, which notify you when users' licenses (based on the purchased price plans) have been assigned and unassigned:

-   Subscription licenses assigned to users
-   Subscription licenses unassigned to users

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## Available subscriptions

For webhook payloads information, see [Monetization webhook payloads](/docs/distribute/monetization/webhook-payloads/)

-   Subscription purchase success
-   Subscription purchase failed
-   Subscription upgraded
-   Subscription upgrade failed
-   Subscription downgraded
-   Subscription canceled
-   Trial subscription ended
-   Trial subscription started
-   Trial subscription will end in 3 days
-   Trial subscription converted to paid
-   Monthly subscription earnings overview - enables you to view subscription information in the [Monetization dashboard](/docs/distribute/monetization/monetization-dashboard/).
-   Subscription renewal failed
-   Subscription renewal success
-   Subscription licenses assigned to users
-   Subscription licenses unassigned to users
-   Subscription ended

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If you have questions related to app monetization, go to [Zoom Developers Forum - monetization](https://devforum.zoom.us/c/marketplace/monetization).