User Entitlement not coming up in API

I can see the entitlements here but with API i cannot retrieve its entitlement the response is this
 

{'request_date': '2024-01-05T15:09:20Z',
 'request_date_ms': 1704467360200,
 'subscriber': {'entitlements': {},
  'first_seen': '2024-01-05T09:47:40Z',
  'last_seen': '2024-01-05T09:47:42Z',
  'management_url': None,
  'non_subscriptions': {},
  'original_app_user_id': '235b8072dc694f61a9442cd126dd6c8c',
  'original_application_version': '1.0',
  'original_purchase_date': '2024-01-04T17:54:42Z',
  'other_purchases': {},
  'subscriptions': {}}}

I have checked the api_key as well and it is correct.