A question arises here: will the creator know that I have unsubscribed to them? Yes, the creator will notice that someone has unsubscribed to them as their subscriber count will decrease.
They may also notice, who unsubscribed to them, but this mainly happens if the creator has a small account. They will know that you have unsubscribed to them if they see who viewed their story, and after unsubscribing, they will see that your name no longer appears in the story views.
But in most cases, creators do not see who has viewed their story, so they would not know who has unsubscribed. I hope everything in this article (which is about what does subscribed mean on Snapchat?) until now is clear. Now let us move ahead.