Observablelist binding not working with xamarin shared view (ListView)

I have an API from which I'm getting Json data, after deserializing this Json I am binding this data to ListView. I tried using MVVM Light where I created Model and View Model and perform the Binding in ListView, the property which I'm binding to ListView ItemSource is ObservableList. The whole process is running properly but I am not able to see the Data in ListView GUI.

Please provide solution or work around for this.