function payForVote(address _votingContract, bytes32 _hash, uint _quantity) public isActive {
        require(_quantity >= 1 && _quantity <= 5);
        uint votePrice = votings_[_votingContract];
        require(votePrice > 0);
        transfer(prizePool, _quantity.mul(votePrice));
        sendVote(_votingContract, msg.sender, _hash);
        ParticipatedInVoting(msg.sender, _votingContract, _hash, _quantity);
    }