JSFiddle - React, Tailwind, and code Playground

HTML

<div id="d">Click Here</div>
<div id="s"></div>

JavaScript

var records = {};


$(function(e){

   records['123'] = {};
   records['456'] = {};

   records['123']['rec_id'] = 4456;
   records['123']['created_at'] = '';
   records['123']['assigned_at'] = '';
   records['123']['sys_id'] = 1745;

   records['456']['rec_id'] = 4456;
   records['456']['created_at'] = '';
   records['456']['assigned_at'] = '';
   records['456']['sys_id'] = 1745;



      $.each(records, function(callID, record){

            record['campaign_id'] = '1';
            record['offset'] = 123;
            record['attempt'] = '7';
            record['phone'] = '800-123-4567';
            record['identity'] = 123;
            record['code'] = 'Some Code';
            record['notes'] = 'Some notes';
            record['completed_by'] = 'Mike A';
            record['name'] = null;

            record['completed_at'] = "";

   });
   
   
   $('#d').click(function(e){
        $('#s').text(  JSON.stringify(records)  );
   });
   
});