An action is any change submitted to the voting system, such as
The author of this action is: theZerg, 1zerg12nRXZ41Pw4tfCTqgtdiJx6D1We3
The member list that this action was made for.
The action string, which is the actual "command" part of the action:
bitcoin-unlimited-voting: 6bc2c8b25a62112738fb003b12767d1e828ed032549819ff8d7182384ac0e388 cast-proposal-ballot vote ab4b83442bd4cd032d1908bb80ddff1755dedaffe2a5fdde2a30ccad0653a77c by theZerg answer (accept) # proposal: BUIP174
This action is part of a multi-action and only the multi-action is signed.