{"id":401110574,"url":"https://lda.senate.gov/api/v1/registrants/401110574/?format=json","house_registrant_id":77541,"name":"SIO ADVOCACY LLC","description":null,"address_1":"1330 Dasher Lane","address_2":null,"address_3":null,"address_4":null,"city":"Reston","state":"VA","state_display":"Virginia","zip":"20190","country":"US","country_display":"United States of America","ppb_country":"US","ppb_country_display":"United States of America","contact_name":"MARK AITKEN","contact_telephone":"+1 443-271-5277","dt_updated":"2026-04-16T15:45:36.036853-04:00"}