Hello,
I am currently encountering a problem with Bubble, what I would like to do is retrieve all the information of a user (phone number, status etc.) for this I used Mailchimp Extended - Subscribe Member as you can see here:
but MailChimp does not detect this, it only detects the email address, last name, and first name sent to it from the Mailchimp extended - subscribe action
You can make a GET api request /lists/{list_id}/segments/{segment_id}/members and the response you get back will have the correct field names which you can use in the merge_fields object