How can I update the article, posts follow button text?

Hello,

What is the recommended way to change the subscribe/follow button text.

The {{subscribe}} helpers have no options and I didn't find a easy way to keep track when the user click the follow button ( text is updated to  Unfollow. Let's say I want to change it to "Unsubscribe") . And second I need to keep track the change of the community language.

It's look very complicated for this simple task to use javascript and I didn't find an easy way to insert some dynamic content.