An action is any change submitted to the voting system, such as
The author of this action is: Peter_Tschipper, 1AmdP3nFWSJhkzszXHZNQiJLx7eUGRbzvs
The member list that this action was made for.
The action string, which is the actual "command" part of the action:
bitcoin-unlimited-voting: 242bbdbc67846623368b9d1fae050d6815f1942093617033be4db57ffe21c9e0 cast-proposal-ballot vote 1698c3534a5afa8a11d656d0eacbcda59a0831b2958e6010d6791ad7ab1d77fa by Peter_Tschipper answer (reject)
Signature:
IKdHmR0LuUIXSLipiSxlsj3iBDHzR8xNhTRVUeQJJenHN/jobza6DCrzKZXv2AqfwCjwUHipPKTVoBjEc/kxjlY=
This signature is the base64-encoded Bitcoin-signature of the above action string, signed with this action author's Bitcoin address.