type: object
required:
  - project_id
properties:
  project_id:
    type: string
    example: demo
  client_id:
    type: string
    nullable: true
    example: device-42
  software_id:
    type: string
    nullable: true
    example: kiosk
  expires_at:
    type: string
    format: date-time
    nullable: true
    example: 2026-12-30T10:00:00Z