{
  section: {
    title: "Login",
    body: "This is your body!"
  }
}

<Label HorizontalTextAlignment="Center"
       Text="{Binding Path=[section][body]}"
       x:Name="Body">
</Label>

<Label HorizontalTextAlignment="Center"
       BindingContext="{Binding Path=[section]}"
       Text="{Binding Path=[body]}"
       x:Name="Body">
</Label>