Google Ads Conversion tracking for WEB

I am having a hard time to find a documentation for web conversion tracking for Google Ads.

I would like to understand more about the HTTP POST request that is sent to Google. I can see there is a good documentation for mobile apps: https://developers.google.com/app-conversion-tracking/api/request-response-specs?hl=en#conversion_tracking_request

Is there similar documentation for web? I would like to understand more how i could send conversions to Google creating manually my HTTP request.

I am aware of the Offline conversions API (https://developers.google.com/google-ads/api/docs/samples/upload-offline-conversion), but it doesn't support the new parameters as wbraid