I have several customers subscribed to many other several Stripe plans on my website: These plans are all 'yearly' and have different subscribing amounts. Notice that I also have customers with a subscription status "active" and many others with "trialing".
Now, I need to automatically change their subscription plans to an unique new yearly plan, with a different subscription amount, at the end of their respective billing cycles.
I was looking for the properly event in order to do the change of plan programmatically within a webhook, but I don't know which to choose having both 'active' and 'trialing' subscriptions.
Any ideas?