How to get single value from cookies which are like hash?

Earlier i write some value in "tksession" cookies, but now i have one big hash there, how to get this value on server side?

socket.on('disconnect', function() { 
            var cookies = `cookie.parse`(socket.handshake.headers.cookie);             
            console.log(cookies); 
});

output :

{ tksession: '9Fjjk0XZbCu7DMIqRvis9A.5dMMejogSNtyMj5-aM5PNPdpa-WyMZ4bNwdpubL70oo06dlRPp0x7kgWBhuc5ydsfZsFIK6eXQWZ8CiNQeTn_A.1495349980836.1800000.y5-KDszouRHDxpNxF0b_pVXMDJIr_7R-5VpFug1GvOE',
  io: 'Vwy43pE3Dftdvp0aAAAB' }

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