Zapier and wordpress, how to connect?

Question

RESTful API

The essence of the task is that there is a site on which users can register, and each user has data in their account that needs to be transferred to zapier. That is, so that each user can specify authentication data in api wp in zapier, through which you can access the information of this user (api token or login password).
A variant of a ready-made wp plugin for zapier was considered, but as it seems, it is intended more for administrators, and does not quite fit the specified scheme.
Does anyone have experience with zapier or better yet zapier+wp rest api? What is the best way to accomplish this task? Are there tutorials on the topic (namely, the development of zapier + wp . Of the documentation is not entirely clear, it was not found in Google)?
I will be grateful for any advice))