curl --request POST \
  --url 'https://api.flashcat.cloud/incident/custom-action/do?app_key=' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "incident_id": "<string>",
  "integration_id": 123
}
'

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  },
  "data": {
    "message": "<string>"
  }
}