curl --request POST \
  --url http://localhost:3000/v1/admin/partners/products/requests/{request_id}/reject \
  --header 'Content-Type: application/json' \
  --data '
{
  "rejection_reason": "<string>"
}
'

{
  "success": true,
  "request": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "status": "approved"
  }
}