curl --request POST \
  --url 'https://api.stateset.com/api/v1/serials/{id}/return' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "return_id": "string"
}'

{
  "created_at": "string",
  "id": "string",
  "lot_id": null,
  "lot_number": null,
  "serial": "string",
  "sku": "string",
  "sold_at": null,
  "status": "string"
}