@id
properties are used as identifiers for compatibility with JSON-LD. The value of such a property must always be an absolute URI that provides a stable globally unique identifier for the resource, as described in RFC3986."@id": "https://id.bookingsystem.example.com/customer-accounts/fdc14503-275e-46d3-9922-45b986c9f9aa"
"hasHiddenEntitlements": "true"
"identifier": "fdc14503-275e-46d3-9922-45b986c9f9aa"