- Go to Google Play Developer Console and login using your Google Developer Account credentials
- Click the Settings icon in the left menu bar.
- Select the API Access section and click the Choose a project to link button.
- Select the Link existing project button.
- Create a new service account.
- Set the Service account name.
- Click the Add key button.
- Download your JSON key file by clicking the Create button.
- Return to the Google Console menu, click Users and Permissions and grant financial permissions to the previously created service account.