Stripe Integration: Multiple subscriptions for the same user

Hello everyone!

I’m having an issue with Stripe and I’m really stuck. Here’s the situation:
I have a platform where a user can upload multiple vehicles for rent, and I need each vehicle to be associated with a subscription plan when it’s uploaded. In other words, if a user uploads 5 vehicles, there should be a subscription for each of those vehicles.
I have the plans created and loaded in Stripe, and all the front-end work is done, but when I try to create the subscription for each vehicle, it assigns it to the user instead of the vehicle’s database itself.

I’m running out of ideas on how to solve this, thanks!