person_id,external_person_id,mdn,subscription_list_id,opt_in_date,opt_out_date,carrier_code,subscription_event,opt_out_reason
77CEA01B-D581-4B2B-BE5D-85169C370D5F,abc123abcdsdfjkla,18475555555,2,2015-02-13T14:23:32,,101,optin,
77CEA01B-D581-4B2B-BE5D-85169C370D5G,abc123abcdsdfjklb,13125555555,3,2015-02-13T19:23:32,2015-02-13T19:23:32,102,optout,disconnect