Cast complex deserialized Json object to enumerable so that it can be bound to an a gridview

I need to understand how to cast a complex deserialized  Json object to enumerable so that it can be bound to an a gridview

           var enumerable = new[] { GetBuilds().Result};
                       

            GridView1.DataSource = enumerable;
            GridView1.DataBind();

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Currently it only results in the top node, i need to get the data in the fields node.