curl --request POST \
  --url https://api.humcli.com/api/v1/tasks/{id}/estimate/reject \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "reason": "<string>"
}
'

{
  "task_id": "<string>",
  "message": "<string>"
}