const msgParams = [{
        type: 'string', name: 'Message', value: 'Hi, Alice!'
     },{   type: 'uint32', name: 'A number', value: '1337'
      }];
      let from = Merchant.accounts[0];
      console.log(window.provider);
      let p = window.provider;
      console.log(Object.keys(window.web3));

      window.web3.eth.sign(from, msgParams, function(err, res) {
        console.log(err);
        console.log(res);
      });

web3.eth.getAccounts(function(a,b) {
      Merchant.accounts = b;
      // alert("Saving accounts" + Merchant.accounts);
      console.log("Merchant accounts: " + Merchant.accounts);
      let x = web3.eth.getBalance;
      console.log(x);
    });



 toChecksumAddress (address) {
    address = address.toLowerCase().replace('0x', '')
    var hash = createKeccakHash('keccak256').update(address).digest('hex')
    var ret = '0x'

    for (var i = 0; i < address.length; i++) {
      if (parseInt(hash[i], 16) >= 8) {
        ret += address[i].toUpperCase()
      } else {
        ret += address[i]
      }
    }

    return ret
  }

reloadKeys() {
        const msgParams = [{
        type: 'string', name: 'Message', value: 'Hi, Alice!'
     },{   type: 'uint32', name: 'A number', value: '1337'
      }];
      // Merchant.accounts[0]
      // let addr = 0x2E290A50d3193753F156e5b0b12e4231Bd568526;
      let from = this.toChecksumAddress(Merchant.accounts[0]);

      // window.web3.utils.toChecksumAddress();
      console.log(typeof(from));
      console.log(from);

      console.log(Object.keys(window.web3));

      window.web3.eth.sign(from, msgParams, function(err, res) {
        console.log(err);
        console.log(res);
      });

let from = web3.toChecksumAddress(Merchant.accounts[0]);