Pubsub Docs: benefit_end_month
This evening I received a resub over pubsub for 3 months in advance. Rather than the documented "multimonthduration" field, that was set to 0 and a new "benefitendmonth" field was returned. This can be used to calculate the number of months, but I can't find any mention of it in the developer docs.
[Deleted User] commented
This extendsub-specific field was (obscurely) documented here: https://discuss.dev.twitch.tv/t/ios-sub-tokens-launch/22794