Reference

when someone subscribes to your channel.

User Information

• [[[event.user_id]]] :: Subscriber's Twitch ID
• [[[event.user_login]]] :: Subscriber's username
• [[[event.user_name]]] :: Subscriber's display name
• [[[event.user_avatar]]] :: Subscriber's profile image URL

Subscription Data

• [[[event.tier]]] :: Sub tier (1000, 2000, 3000) :: DON'T USE
• [[[event.tier_display]]] :: Sub display (1, 2, 3) :: USE THIS
• [[[event.is_gift]]] :: true/false if gifted

note: maps to the Twitch EventSub event channel.subscribe.