ENUM
SubscriptionTier
A channel could have multiple subscription products at varying tiers. Each value will always map to the respective tier for every channel that has the given tier available as a product.
Example: A channel with a "tier 2" subscription product will always have the tier represented as T_2000.
link GraphQL Schema definition
1 enum SubscriptionTier { 2 3 #   Custom tier. 4 5 6 #   Subscribed with Twitch Prime. 7 8 9 #   Tier "1000". 10 11 12 #   Tier "2000". 13 14 15 #   Tier "3000". 16 17 } 
              link Required by
- DashboardActivityFeedActivityCommunitySubscriptionGiftingWhen a user gifts subscriptions to a community for a channel.
 - DashboardActivityFeedActivityIndividualSubscriptionGiftingWhen a user gifts a single subscription to another individual user for a channel.
 - DashboardActivityFeedActivityResubscribingWhen a user resubscribes (NOT via Twitch Prime) to a channel.
 - DashboardActivityFeedActivitySubscribingWhen a user subscribes for the first time (NOT via Twitch Prime) to a channel.