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: ba0411a9e0c7f210c553a4272e3d1fb78bad93c5a59d6f8ae566287f151921ad cast-member-ballot name Erik_Beijnoff address 1Nm9MEPAi5qLA9MFULNQAs432fNLrQdpGr by Peter_R answer accept
Signature:
HwoZbYz4DVUNMEZHKTUhEDsnuneatf07K8FUw3wm0egeZQq99wy5N7jXVzYxXQdBtWT693DVMC1BO4GSYw76U60=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.