id - Unique identifier that is mostly an implementation detail (best to ignore). To uniquely identify proposal, it's best to use proposal_id.
proposal_id - Before using this value for any further broadcasts, ensure it is part of an irreversible block.
creator - Account that created this proposal.
receiver - Account that will receive funds, if this proposal is approved.
start_date - When payments should begin.
end_date - When payments should end.
daily_pay - Amount of HBD expected per day.
subject - Summary of this proposal.
permlink - Post by either creator or receiver.
total_votes - VESTS cast for this proposal. This will is calculate every maintenance period.
status - Current status of this proposal.