Request token to Filemaker

Hi, I am looking to write a little piece of code to get a link between filemaker rest API and the Wix database.

I have read a lot but I just don’t get a good example that could help me. I even tried to hire a wix designer but nobody want to help.

So… In Postman, I am able to do everything that I want to do. Connect to filemaker and get a token that is valid for 15 minutes and use this token to query the database with the Filemaker API.

Here is a screenshot of the Postman request to get a token. I want to be able to reproduce this into my wix website. The goal is to get all record from my Filemaker database to the wix database. Can someone help me please. Everybody keep telling me to go see the Velo: Accessing 3rd-Party Services with the Fetch API | Help Center | Wix.com but this does not help at all as this demonstrate how to connect to an api that does not required an auth or token.

Thanks for the help.