An action is any change submitted to the voting system, such as
The author of this action is: norway, 13eS5t4WGGPSwFKRQYzCKcfWF6sfjN1Ka2
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-proposal-ballot vote a296ddb810354859ea66d49fec03d07e3a19b956f00d5fecc6fe48347a14c2fa by norway answer (accept)
Signature:
IDyCQGpIIsZwY/ns8GgXTvOApz+ihWRp4+7oFjdPU+WAW17IomVAFkr29fSkgXlVn4jWlSlUUh59Gx/xpY/eWNs=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.