An action is any change submitted to the voting system, such as
The author of this action is: solex, 15TiujYmnHa33fjEnasBBm1eWcGx9YEXPL
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 e5fe741711e103a374e6ea6003b170bb7ff0640f6a9e2dfdeed87f6662b46ad3 by solex answer (accept)
Signature:
HwALuZ345DK/PopGQz2deYdv2nAWgrBzEg2+8yalvxs0CUDWnh1ILvSnK3QMSLRwp3TaOGL1pSC9CrBKOlGx85E=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.