curl --request GET \
  --url https://app.flowglad.com/api/v1/usage-events \
  --header 'Authorization: <api-key>'

{
  "items": [
    {
      "id": "<string>",
      "createdAt": "<string>",
      "updatedAt": "<string>",
      "livemode": true,
      "customerId": "<string>",
      "subscriptionId": "<string>",
      "usageMeterId": "<string>",
      "billingPeriodId": "<string>",
      "amount": 123,
      "usageDate": "<string>",
      "transactionId": "<string>",
      "priceId": "<string>",
      "properties": {}
    }
  ],
  "total": 123,
  "hasMore": true,
  "nextCursor": "<string>"
}