Stripe Webhook and previous

Hi, im using subscrption.update webhook to recognize a user have canceled at the end of subscription period.

How i can recognize when the user cancel the cancellation request?

I got always trought the same subscription.update but the problem is how i can recognize that now the update is for cancel the cancellation?

I see the previous_attributes coming but inside bubble i endpoint i dont have it (i got only plan attributes) how i can solve?

Thanks in advance