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: 9a68078bbff9de910bb8c377e699832cc907f9ce048625b18b0fe7ea1da14689 cast-proposal-ballot vote 784d100f1e9827bba82e613e9c6338c0636910da758b73dd18afee75042a5dee by lunar answer (accept) # proposal: BUIP070
Signature:
IBzHZd0je+FXF7Is37TBUh2Rk8oAducbcVEBpEpRTVBIeRWj8uEkiw7gt9KuaUZ2SzyC8tTC5arHO4MjE2nvewE=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.