node.bittrex.api/examples/bittrex.websockets.listen.example.js

const bittrex = require('../node.bittrex.api');

const websocketsclient = bittrex.websockets.listen( function( data ) {
  if (data.M === 'updateSummaryState') {
    data.A.forEach(function(data_for) {
      data_for.Deltas.forEach(function(marketsDelta) {
        console.log('Ticker Update for '+ marketsDelta.MarketName, marketsDelta);
      });
    });
  }
});