Track has the same behavior on the server as it has from the client. The only difference is that you must specify the "user_id" when track is called from the server. Use the ID field from your database, the same you would in an identify call.

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JSON expected

All Attribution server-side endpoints expect JSON

If you don't have user_id but still want to track event for anonymous user from server-side you need to pass cookie_id property which will contain anonymous user id. You can get from JavaScript by calling:

Attribution.user().anonymousId();

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

Language
Authentication
Basic
base64
:
Response
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