Please help :.| Very simple POST CALL to WIX API in order to create member using only email

Question:

Why am I continuously getting this error in Zapier when trying to send a POST request to my wix site to create a new member using email only? Please see the return error and request screenshots below. Please help

"Failed to create a request in Webhooks by Zapier

Entity not found (HTTP Status Code: 404)"

Product:
Zapier

What are you trying to achieve:
Every time a customer fills out a form from a third-party I’d like to capture that email and send a POST request into my wix members site to create a new member using email only -according to this link:

Create Member | REST (wix.com)

What have you already tried:
I have tried re-arranging the auth and params and still nothing. Even tried using the wix-site-id, wix-account-id, including giving the raw site name in the headers. I’m at a loss at this point and am in desperate need of some assistance.

Additional information:
Post call in Zapier using webhooks by Zapier. When trying this in WIX test environment it works perfectly. So I am assuming that there is something I am setting up wrong regarding the params

There is a possibility to inspect the issue directly on your project?

Hey, I decided to just build out my cloud server and have found several work arounds. Thank you for the reply.