curl --request POST \
  --url 'https://api.stateset.com/api/v1/serials/{id}/reserve' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "expires_in_seconds": null,
  "reference_id": null,
  "reference_type": null,
  "reserved_by": null
}'

{
  "expires_at": null,
  "reference_type": "string",
  "reservation_id": "string",
  "serial_id": "string"
}