The Identify API endpoint is
/api/identify, which is used to track properties about an individual without tracking an associated event. It encodes the following data in a dictionary or hash:
- This is your public API key.
- Custom information about the person who did this event. You must identify the person by their email, using a
$id. Other than that, you can include any data you want and it can then be used to create segments of people. For example, if you wanted to create a list of people on trial plans, include a person’s plan type in this hash so you can use that information later.