curl --request POST \
  --url https://api.klavis.ai/sandbox/slack/{sandbox_id}/initialize \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "channels": [
    {
      "name": "<string>",
      "description": "<string>",
      "is_private": false,
      "messages": [
        {
          "text": "<string>",
          "reactions": [
            {
              "name": "<string>"
            }
          ],
          "replies": [
            "<unknown>"
          ]
        }
      ]
    }
  ]
}
'

{
  "sandbox_id": "<string>",
  "status": "idle",
  "message": "<string>",
  "records_created": {}
}