curl --request GET \
  --url https://app.flowglad.com/api/v1/resource-claims/{subscriptionId}/usage \
  --header 'Authorization: <api-key>'

{
  "usage": {
    "resourceSlug": "<string>",
    "resourceId": "<string>",
    "capacity": 0,
    "claimed": 0,
    "available": 0
  },
  "claims": [
    {
      "id": "<string>",
      "createdAt": 0,
      "updatedAt": 0,
      "livemode": true,
      "organizationId": "<string>",
      "resourceId": "<string>",
      "subscriptionId": "<string>",
      "pricingModelId": "<string>",
      "externalId": "<string>",
      "claimedAt": 0,
      "releaseReason": "<string>",
      "releasedAt": 0,
      "expiredAt": 0,
      "metadata": {}
    }
  ]
}