Similar to the Company onboarding, the Individual onboarding endpoint allows you to onboard any individual or physical person who is part of a transaction. In most cases (i.e. B2C transactions), the Customer will be a physical person and you should use this endpoint to onboard them.
An example of the request in various programming languages is available in the console pane on the right-hand side. After clicking on the 'Try it' button, you will get a response.