Receives user authentication events from Auth0 post-login/post-registration action. Creates a new customer or updates existing customer data (if changes detected). Generates Cleeng access token (JWT) with configurable expiration.

Authorization: Requires Bearer token (JWT). The token value must match the secret in publisher configuration.

IMPORTANT NOTE: This feature is currently in Early Access. This means it's ready for real-world use while we gather user feedback to enhance its functionality and address any minor issues.