An action is any change submitted to the voting system, such as
The author of this action is: deadalnix, 1KEaWZ7tpLF4n5xFf5bpTPff7G7uJZiDGw
The member list that this action was made for.
The action string, which is the actual "command" part of the action:
bitcoin-unlimited-voting: 17fedb2146b90528805cd8f43b585bfbc3db5e1343eb665d35e9976118a970ce cast-member-ballot name Daniel_Lipshitz address 1HK2S5iXZZ4TYt1osvaLY6TqJMkkjEdpzA by deadalnix answer abstain
Signature:
IGVfrJlmRrFczR5g9qMsTxl8HDyTsSLCkO4GOzbflLTfKRH8L++Rk/hSbDhuAAYLh8cCy3nKgmM25wwG9hXKCGw=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.