Get_broadcaster_subscriptions pagination value

I have more than 20 subscriptors and if I ask for the first 20 I don’t get the pagination value for the next values.
Also on BroadcasterSubscriptions object there is no way to determine the pagination value (even using to_dict)

In any case if I use curl I get IN ANY CASE the pagination value even if there are less than 100 entry.
Since the library is the official one from Twitch I think it is something to consider.