An action is any change submitted to the voting system, such as
The author of this action is: Peter_R, 1BWZe6XkGLcf6DWC3TFXiEtZmcyAoNq5BW
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 7fec994e6862d9dd7035fabe40e6741fc2dff8ee56633abae28c3e7665c83ae8 by Peter_R answer (accept)
Signature:
H631xsCMjo7g6pm+bUeYvMeqsPGDRUEM55PgInfG+4dIOZ0gmXysK9Vo7MQWZREk9c1rLQTf16l93x7XjCWO0po=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.