To track subscription status updates on Google Play, create and upload a service account JSON file to AppMetica. The steps for creating a service account are described in detail below.

In the email address field, enter the email address linked to your service account:
Example
On the same page, go to the Account permissions tab and select the following options:
View app information and download bulk reports (read-only).
View financial data, orders, and cancellation survey responses.
Manage orders and subscriptions.
Go back to the App permissions tab and select the app you're setting up tracking for (Add app). Click Invite user, then in the Send Invite pop-up window:
Open AppMetrica, go to your app's settings, and select the Revenue section.
In AppMetrica, go to Settings → Revenue → Tracking and validating Google Play subscriptions and upload the service account's JSON file.
Example
Topic for tracking subscriptions
You can also track subscription statuses using the Google Cloud Console topic. AppMetrica has three options for working with the topic to choose from:
A new topic will be created in AppMetrica. If you don't use another subscription tracking service, we recommend choosing this option.
Copy the topic name in the interface and paste it into Google Play Console → Monetization setup → insert the topic in the Topic Name field.
Make sure that the Cloud Pub/Sub topic exists and you have granted Google the necessary permissions to publish notifications. For more information, see the documentation.
Use an existing topic. If you use an additional service to track subscriptions, there should be an existing topic. Google Cloud Console doesn't let you use two topics at the same time. Therefore, you need to copy your current topic and paste it into AppMetrica, the Settings section, the Revenue subsection.
To do this, go to Google Play Console → Monetization setup, copy the topic name from the Topic name field, and paste it into the Revenue settings input field in the AppMetrica interface.
Don't use a topic. We don't recommend choosing this option, because when no topic is present, AppMetrica will only check subscription statuses once a day and subscription data may be delayed by up to 24 hours. Some of the subscription events will also be unavailable.
Troubleshooting
Error creating a topic
The PERMISSION_DENIED: Cloud Pub/Sub API has not been used in project before or it is disabled error occurs.
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