This is a source of Github Subscriber web application
You may use that web app to follow users on Github.
Just input some username (not yours) and get all user's connections.
Then with a single click follow them but don't forget to provide your username and token, otherwise, the API won't recognize you.
You may load your followers list and track changes - who followed or unfollowed you.
The followers list is compared with the last snapshot.
Click the button Save followers list to make a snapshot - your current followers list will be saved to your local database (IndexedDB).
Go to https://github.com/settings/tokens/new and generate a new token.
Don't forget to select user: follow option - that permission is needed to make corresponding API calls.