An action is any change submitted to the voting system, such as
The author of this action is: imaginary_username, 1KNvUAmquf9v2BgyrTsLjE8GdKwu1PaJed
The member list that this action was made for.
The action string, which is the actual "command" part of the action:
bitcoin-unlimited-voting: cdb3de1a02836ad7aed816ac9c6245b5dcc2b41345865b7ae3026a29ac290758 cast-proposal-ballot vote 66d3ae145d769a83432c5ca9e1d73581f247b4503473d9607a0d27c93580687f by imaginary_username answer (accept) # proposal: BUIP116
Signature:
Hx9ZCmq6YCvgWuy+xT3UWx+GaKV/YGD2oL7XllY38dq3a+HB3EKFCGvGCOQPC9qLtRpdiREIYi/66TLnkLmOKxI=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.