An action is any change submitted to the voting system, such as
The author of this action is: lunar, 1BpYYT2HQzQdz5CFPM1nehCZd1xWPtNbma
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 bc15e1ca19c90ee9ca60cc64a7acf405075fdea62595c5d450443b6a90846e25 by lunar answer (accept)
Signature:
IEpR5N3ftX3Ege547c7UCvwbJlDKwNfSnumiPFHeTEawfocOpRYeB3/jYk48kAOI2o72dJu9YA1OmrOAF9KCb+8=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.