title: How to remove element from an array which as nested objects
body: <p>This is my array,</p>
  
  <pre><code> arr = [
           {
             'User': {
                'id':1058,
                'name':'user67'
              },
              Source: {
                 'dom':'pl-4'
              }
           },
           {
             'User': {
                'id':768,
                'name':'user13'
              },
              Source: {
                 'dom':'pl-4'
              }
           }
         ];
  </code></pre>
  
  <p>I am using the following code to remove:</p>
  
  <pre><code>        arr= _.without(arr, _.findWhere(arr, {id: 768}));
  </code></pre>
  
  <p>I want to remove the user with id 768 but it somehow does not work. </p>
  
  <p>How can I search in nested objects?</p>