curl --request POST \
  --url 'https://api.flashcat.cloud/template/preview?app_key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "content": "Incident {{.Title}} is {{.Status}}",
  "type": "feishu_app",
  "incident_id": "664a1b2c3d4e5f6a7b8c9d0e"
}
'

{
  "request_id": "01HK8XQE3Z7JM2NTFQ5YJ8P9R4",
  "data": {
    "success": true,
    "content": "Incident Database latency spike is Critical",
    "message": ""
  }
}