What exactly causes the welcome popup window that creates a Bank Account for new users

[PetraNikolova]

Hello!

I'm a QA Automation intern and my task is to create an automated testing framework for this app. I'm almost done, but I have one last task - to disable the welcome popup window that creates a bank account for a new user, when the user logs in for the first time. My task is to do it through API calls and cookies, etc., meaning without UI. So my question is, what exactly causes the dialog to appear? Is it some hidden flag or cookie or a request? I am not sure, but I have a theory, so I've attached a photo of the request that I think is what causes the popup. Please, tell me if I'm right and if I'm not, please, let me know what really triggers this popup window and how to disable it. Thank you in advance!