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: 9139498685e653fc405cb1e2a1281af8b03f43491027a72a7ba31366d9d018e8 cast-member-ballot name imaginary_username address 1KNvUAmquf9v2BgyrTsLjE8GdKwu1PaJed by Peter_R answer accept
Signature:
H5TyEEcKGx6ATkL8euWgjdsXcaVbjfctg76kVMQ8G1ixch19UstaUwKA1NlVZ+cZ3qIO36mqaisUgfaUdIXWrKI=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.