curl --request POST \
  --url 'https://api.flashcat.cloud/incident/war-room/add-member?app_key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "integration_id": 123,
  "chat_id": "<string>",
  "member_ids": [
    123
  ]
}
'

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