Access form data via Javascript on success

Hello, I am looking to use the custom javascript on mail success field in admin to send form data as JSON to a webhook. Here’s my code:

var settings = {
  "async": true,
  "crossDomain": true,
  "url": "https://sokt.io/XXX/",
  "method": "POST",
  "headers": {
    "content-type": "application/json",
    "authkey": "XXX"
  },
  "processData": false,
  "data": "{\"name\" : \"name\"}"
}

$.ajax(settings).done(function (response) {
  console.log(response);
});

Where “name” and “name” represent each form field as key and value. What I can’t figure out is exactly what syntax and how to plug each individual key and value in. Can anyone help? Thanks! Tom