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