Eth_call on Mkr returns abbreviated symbol

Hello everyone. I’m new to this and adapting someone else’s code so may well be doing something stupid. Apologies in advance if this is the wrong place for this question. I am trying to retrieve token symbols, and am getting a shortened result for MKR. Could someone explain why this is the case?

Here is the code (fyi this is using Google Apps script):

function readContract()
  var data = {"jsonrpc":"2.0","method":"eth_call","params":[{ "to": "0x9f8f72aa9304c8b593d555f12ef6589cc3a579a2","data": "0x95d89b41" },"latest"], "id":1};
  var options = {
     'method' : 'post',
     'contentType': 'application/json',
     'payload' : JSON.stringify(data)
  var response = UrlFetchApp.fetch('', options);
  return JSON.parse(response);

Most contracts give a response in the form: {id=1.0, result=0x000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000035946490000000000000000000000000000000000000000000000000000000000, jsonrpc=2.0}

But MKR gives: {result=0x4d4b520000000000000000000000000000000000000000000000000000000000, id=1.0, jsonrpc=2.0}

Thank you!