post https://track.attributionapp.com/v1/i
You can use identify from the server to pass in traits for known users. These traits will only be tied to a browsing history when that user has been previously identified in the browser using the JS API.
JSON expected
All Attribution server-side endpoints expect data in JSON format.
A note on Auth headers
Attribution app uses a HTTP Auth for all server-side functions.
Your HTTPS request header should have a blank password and the username must be your "Project ID" from Attribution app settings