title: BotFramework: 'State size exceeded configured limit.'
body: <p>I'm devloping a bot and whenever I PostAsync herocards (50 hero cards) in a formflow, in the end it gives me an error message: 'State size exceeded configured limit.' from Microsoft.Bot.Connector.DLL</p>
  
  <p>Error happens when try to setPrivateConversationData 
  Below the error on Emulator:</p>
  
  <pre><code>  "key": {
      "channelId": "emulator",
      "conversationId": "i99caeb8n2h7",
      "userId": "default-user"
    },
    "state": {
      "eTag": "1506952139325",
      "data": {
        "ResumptionContext": {
          "locale": "en-US",
          "isTrustedServiceUrl": true
        },
        "DialogState": "H4sIAAAAAAAEAOx9B2AjWX........",
        "ServiceUrl": "http://localhost:1460"
      }
    }
  }
  </code></pre>
  
  <p>Response:</p>
  
  <pre><code>{
    "error": {
      "code": "MessageSizeTooBig",
      "message": "State size exceeded configured limit."
    }
  }
  </code></pre>
  
  <p>Thank you everyone</p>