curl --request POST \
  --url 'https://api.flashcat.cloud/calendar/info?app_key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "cal_id": "cal.eh9gvPtWeH3xXgKeVSRxRg"
}
'

{
  "request_id": "01HK8XQE3Z7JM2NTFQ5YJ8P9R4",
  "data": {
    "account_id": 2451002751131,
    "team_id": 2477033058131,
    "cal_id": "cal.eh9gvPtWeH3xXgKeVSRxRg",
    "cal_name": "Stock Exchange Calendar",
    "description": "A stock market trading calendar example",
    "timezone": "Asia/Shanghai",
    "kind": "personal",
    "workdays": [
      0,
      1,
      2,
      3,
      4,
      5,
      6
    ],
    "created_at": 1702455630,
    "updated_at": 1775529526,
    "creator_id": 2476444212131,
    "updated_by": 3790925372131,
    "status": "enabled"
  }
}