Info : This section will provide you steps to request access tokens with the specific scope https://www.googleapis.com/auth/androidpublisher using OAuth 2.0 Assertion Profile Objective Generate an Access token with OAuth 2.0 assertion profile Requirements Coding expertise level: Medium Hands-on Google OAuth Hands-on JWT token JSON Web Tokens - jwt.io Aware of Service Account How to get Access Token? You will be requiring the Endpoint to get a token, the scope you are requesting access_token for. There are certain libraries out there which will do this stuff but let’s understand the basics so you can do it on your own without depending upon any libraries. Why do we need this access_taken? We need this access_token to call further in-app purchase API verification calls like purchases.products or purchases.subscriptions APIs. So, for that, we need to complete the OAuth with the help of the Service Account JSON file. What do we read ...