Generate Schema from existing data

Is there any tools that can auto Generate schema for JSON data like this? Its a long data and hard to write schema with auto generation.

{
"_id" : ObjectId("590886af47627f86e5857141"),
"code" : "MY",
"name" : "Malaysia",
"background" : "https://vfbdt",
"icon_image" : "https://sfergerg",
"main_image" : "https://sfergerg",
"is_active" : true,
"gov_system" : "dasdad",
"topics" : [ 
    {
        "name" : "overview",
        "facts" : [ 
            {
                "key" : "capital",
                "value" : "Kuala Lumpur"
            }, 
            {
                "key" : "population",
                "value" : "232424234"
            }, 
            {
                "key" : "reliogion",
                "value" : "Islam"
            }
        ]
    }, 

  ]
}

and Can I use nested schema in mongoose?

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