An action is any change submitted to the voting system, such as
The author of this action is: kostialevin, 1BTXKkt2TmkPEDmn6EBhh8t8r9cPbKwbBF
The member list that this action was made for.
The action string, which is the actual "command" part of the action:
bitcoin-unlimited-voting: 242bbdbc67846623368b9d1fae050d6815f1942093617033be4db57ffe21c9e0 cast-proposal-ballot vote 5e3445ea2e81fb23bec02ce937a48ab70511f2909d0f9f116cb61cc762e42bb4 by kostialevin answer (accept)
Signature:
HAaugLOHL0OA1ksKhVJlZ3qr4WR0hTlrg7az+YoqMGSVbQj8yKKGpyhmTtXf/9AtkreUstWymBclyr0Nut283XU=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.