curl --request POST \
  --url 'https://api.stateset.com/api/v1/serials/{id}/reserve' \
  --header "Authorization: Bearer $STATESET_API_KEY" \
  --header 'Content-Type: application/json' \
  --data '{
  "expires_in_seconds": 250,
  "reference_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "reference_type": "string",
  "reserved_by": "string"
}'

{
  "expires_at": "2026-08-31T14:22:05Z",
  "reference_type": "string",
  "reservation_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "serial_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6"
}