An action is any change submitted to the voting system, such as
The author of this action is: Mengerian, 13JdYTKi4QN6KyYWwifCvNMeaRaeq1JQ38
The member list that this action was made for.
The action string, which is the actual "command" part of the action:
bitcoin-unlimited-voting: be3c66388058cc34d9e899e516e8ed808b294bb3d567008f12727ed5d8b5e3c0 cast-member-ballot name xmodulus address 1Cm25eFUNCXrFSHH1vqbXGYcsy9TZGyYGq by Mengerian answer reject
Signature:
H1AvPSLXqVYxT97LB0qwE2IaaXBKGSgST7DWpXY3VbyXMBmxFt/LyjT39QdYy1ipJFUyEex0MRhn6Avb8ZHN3XA=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.