HTTP Request Subscription

Hello,

I’m selling softwares.

I would like to query our Wix website Database trough an HTTP request from our software windows installer.

Exemple :

  1. User execute our installer exe [setup]
  2. User enter their email
  3. Once user press “check button” installer send and http request to our WixWebsite.
  4. If user email exist than we check for subscription.
  5. If subscription is still active than user is allowed to install the software.

My question is :

Is there a collection that need to be query ? Or is there another way to do that ?

Currently if i go to my members collections “in dev mode” i don’t see a field for “Purchased susbscriptions” and or “Status” and or “Start Date”

Thanks in advance for guidance.