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: cdb3de1a02836ad7aed816ac9c6245b5dcc2b41345865b7ae3026a29ac290758 proposal-upload file 0345a80702c39f132535f2cc01cdb014816e4e2589dbbc528e2b7d83cf511249 by solex
Signature:
IB8MlwDR0s2T46cJn7DYvOwwbMh0r+zYCBH5IVZO6L/qJeUrh7g07NnDIYPMqoLsxQuOYhkSKPh/hPbsB+YA52w=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.