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: 5776292860f8c233038833f18c8d4eaaab686efc9dc721265df14d3fde9f2efb proposal-upload file 45f3c964c4157f01fd1354f0a1fa1bfa86027be7ccda685b63245591948809a2 by solex
Signature:
HyTl8dudkCXEr3p1j+D3aVoKbguQoMIQFXl2jmNUtjrzWDjXGC0QsKP/2BpsF4Qnx0F3Krhey+6aYcRrI67AeYc=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.