{
	"outer_col_1":[
		{
		 "nested_inner_col_1":"val_1",
		 "nested_inner_col_2":2
		},
		{
		 "nested_inner_col_1":"val_2",
		 "nested_inner_col_2":2
		}
	],
	"outer_col_2":{
		"inner_col_1":3
	},
	"outer_col_3":4
}