@BarryCarlyon so it seems some accounts, especially small streamers, don’t have subscriber within 5 days or so, that’s why the endpoint /subscriptions/events might not work for my case 
That’s what I want to do:
Real-time data is updating those values, just the initial date is not being that easy to get.
Is it ok to use Kraken? I know it’s deprecated but since I don’t have any plausible solution for my needs using Helix, I might be switch to Kraken, only to get the latest subscriber at least.
I’m wondering how Streamelements can get this data easily. Any clue?