curl --request GET \
  --url https://api.example.com/api/v1/customers/{id}/entitlements \
  --header 'X-API-KEY: <api-key>'

{
  "data": {
    "entitlements": [
      {
        "isGranted": true,
        "type": "FEATURE",
        "accessDeniedReason": null,
        "feature": {
          "refId": "feature-api-calls",
          "displayName": "API Calls",
          "featureType": "NUMBER",
          "featureStatus": "ACTIVE"
        },
        "usageLimit": 10000,
        "hasUnlimitedUsage": false,
        "resetPeriod": "MONTH",
        "currentUsage": 2500
      },
      {
        "isGranted": true,
        "type": "FEATURE",
        "accessDeniedReason": null,
        "feature": {
          "refId": "feature-sso",
          "displayName": "Single Sign-On",
          "featureType": "BOOLEAN",
          "featureStatus": "ACTIVE"
        }
      }
    ],
    "accessDeniedReason": null
  }
}