The number of subscriptions the gifting user has already gifted in total.
The info about the original gift of the subscription, when renewing a multi-month gift.
The plan ID of the subscription.
Tier 1, 2, 3 are '1000', '2000', '3000' respectively, and a Twitch Prime subscription is called 'Prime'.
The number of consecutive months of subscriptions for the channel.
Will not be sent if the user resubscribing does not choose to.