What does nudge mean on tiktok

I have been seeing this “nudge” thing pop up on TikTok and I’m totally confused! I know it’s some kind of new feature, but I can’t figure out what it actually does. Does it mean someone likes my video? Or are they trying to start a conversation?

I have tried looking it up but I haven’t found a clear answer yet. Can someone explain what a nudge means on TikTok?
Thanks!

Nudges can include reminders to like, comment, or follow material, subtle hints to engage in trends or try new services and computational suggestions that surface information based on the user’s preferences.

With TikTok’s Nudge function, users can urge content creators they follow to go live by sending them a notification.