An action is any change submitted to the voting system, such as
The author of this action is: Erik_Beijnoff, 1Nm9MEPAi5qLA9MFULNQAs432fNLrQdpGr
The member list that this action was made for.
The action string, which is the actual "command" part of the action:
bitcoin-unlimited-voting: 9139498685e653fc405cb1e2a1281af8b03f43491027a72a7ba31366d9d018e8 cast-member-ballot name Shaun_Chong address 1BZTJSoLVgwwKrKpV6DGyDQeUUGw5wthuu by Erik_Beijnoff answer accept
Signature:
Hz4nCwZJ88DiAdfNdMz07cPUkDqaC9Hi8c+6Ky6oSAhtfzaZkUVhzBPB9OV0EJVJIO/itYbimiTalpJGnOEpcRI=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.