fix: Send user id when setting up an account

[MiloradFilipovic]

Summary

This PR adds a user id to request payload when setting up an account.

Related tickets and issues

Fixes PAY-1377

Review / Merge checklist

• [ ] PR title and summary are descriptive. Remember, the title automatically goes into the changelog. Use (no-changelog) otherwise. (conventions)
• [ ] Docs updated or follow-up ticket created.
• [ ] Tests included.

  A bug is not considered fixed, unless a test is added to prevent it from happening again. A feature is not complete without tests.