curl --request GET \
  --url https://api.useduro.com/v1/customers/{id}/subscriptions \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "<string>",
      "planId": "<string>",
      "currentPeriodStart": "<string>",
      "currentPeriodEnd": "<string>",
      "cyclesCompleted": 123,
      "createdAt": "<string>"
    }
  ]
}