curl --request POST \
  --url 'https://api.stateset.com/api/v1/serials/{id}/return' \
  --header "Authorization: Bearer $STATESET_API_KEY" \
  --header 'Content-Type: application/json' \
  --data '{
  "return_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6"
}'

{
  "created_at": "2026-08-31T14:22:05Z",
  "id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "lot_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "lot_number": "string",
  "serial": "string",
  "sku": "SKU-TENT-2P-GRN",
  "sold_at": "2026-08-31T14:22:05Z",
  "status": "pending"
}