curl --request POST \
  --url https://www.anyfast.ai/kling/v1/general/delete-elements \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "element_id": "863121023120580662"
}
'

{
  "code": 0,
  "message": "SUCCEED",
  "request_id": "<string>"
}