Registers (or replaces) the HTTPS URL to which the supplier will deliver event notifications. Each RTI User has one active webhook URL per supplier.
OAuth 2.0 Authorisation Code flow for RTI User authentication and consumer consent.
Each supplier operates its own OAuth server. In production, substitute the
placeholder host with the relevant url from the Supplier Register.
OpenAPI does not permit URI templates in security scheme URLs, so a placeholder
is used here.
The HTTPS URL that will receive event notification POSTs.
Webhook registered. Returns the assigned webhook ID.
UUID uniquely identifying a registered webhook endpoint.
"550e8400-e29b-41d4-a716-446655440000"