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: 4e6471c8af35dbd4866895c2d40fd22738ccfcebe5feca6dd96d0e9896851ec7 cast-member-ballot name bitcartel_ address 18aGLNEVjtmskE3Sj4KeW9EmqKyetdxn8o by imaginary_username answer abstain
This action is part of a multi-action and only the multi-action is signed.