How to get access_token for replying review in Play Developer API?

This link: Reply to Reviews describes the way to retrieve and reply to reviews. The Google Play Developer Reply to Reviews API allows us to view user feedback for our app and reply to this feedback. But I am finding it difficult to get the authorization token. It says I should have got this when I get access to the API.

But after going to the link, I didn't find too many information on this, rather, it has another link which takes me to the page where I have already created a service account.

After summarizing, my question is - I have created a service account and downloaded the key as JSON. But how to get this access_token the given snapshot asking for? The JSON file itself doesn't contain such access_token, rather it contains other information including type, project_id, private_key, client_id etc.

https://stackoverflow.com/questions/67278120/how-to-get-access-token-for-replying-review-in-play-developer-api April 27, 2021 at 02:42PM