title: setState with nested JSON
body: <p>I am new to RN and am trying to figure out how to use setState with nested JSON.</p>
  
  <p>My object is in the following format:</p>
  
  <pre><code>{
    "data": {
      "count": 1,
      "current": [
        {
          "Id":"284"
        },
        {
          "Id":"285"
        },
        {
          "Id":"286"
        }
      ]
    }
  }
  </code></pre>
  
  <p>I have set the state as follow:</p>
  
  <pre><code>state = { notices: [data] };
  </code></pre>
  
  <p>I need to update the count value and set state:</p>
  
  <pre><code>this.state.notices[0].data.count = newcount
  </code></pre>
  
  <p>I am trying to do it wth <code>this.setState</code> but I can't figure out how to set it for nested JSON.</p>