curl --request GET \
  --url https://api.roxom.com/v1/market/calendars \
  --header 'X-API-Key: <api-key>' \
  --header 'X-API-Signature: <api-key>'

{
  "data": {
    "calendars": [
      {
        "closeHour": "<string>",
        "code": "<string>",
        "holidays": [
          {
            "date": "<string>",
            "description": "<string>",
            "earlyCloseTime": "<string>",
            "lateOpenTime": "<string>"
          }
        ],
        "id": "<string>",
        "name": "<string>",
        "openDayBefore": true,
        "openHour": "<string>",
        "openOnWeekends": true,
        "timezone": "<string>"
      }
    ]
  },
  "error": true
}