title: How can generate an NSMutableDictionary with multiple keys and values
body: <p>I want to generate a nsmutmutable dictionary with the following structure:</p>
  
  <pre><code>"user1": {
              "phone Number": "123-123-1234"
              "email": "me@me.com"
              "title": "sales"
              }
  "user1": {
              "phone Number": "123-123-1234"
              "email": "me3@me.com"
              "title": "support"
              }
  "user2": {
              "phone Number": "123-123-1234"
              "email": "me3@me.com"
              "title": "management"
              } 
  </code></pre>
  
  <p>any of you knows how can I do this?</p>