An action is any change submitted to the voting system, such as
The author of this action is: Christoph_Bergmann, 1BvayiASVCmGmg4WUJmyRHoNevWWo5snqC
The member list that this action was made for.
The action string, which is the actual "command" part of the action:
bitcoin-unlimited-voting: 4e6471c8af35dbd4866895c2d40fd22738ccfcebe5feca6dd96d0e9896851ec7 cast-proposal-ballot vote 4d26ecce1c01eb4279b9721ee5b52931f5e14012f0ce95f180a8cac3bfb712d4 by Christoph_Bergmann answer (reject) # proposal: BUIP107
Signature:
IKBr3mYDo0tJkJtp9oO43WT2B3jvw9CRS+gFSTGJglDhWC9QeyNSVohjkOdxnSWTQHnKm9Gg7Qv+8R3Oron5Jnw=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.