How to form the correct schema for mongoose?

Question

MongoDB

How to form the correct schema for such data with nesting?

"Россия": {
        "Московская область": {
            "Москва": {
                "phone" : "[phone]",
                "coord" : [54.564564, 78.5745464],
                "offices": [
                    {
                        "type": "Точка",
                        "adress": "ул. Пушкино",
                        "schedule": "without",
                        "phones": ["[phone]", "[phone]"]
                    }
                ]
            }
        },
        "Ростовская область": {
            "Ростов-на-Дону": {
                "phone" : "[phone]",
                "coord" : [54.564564, 78.5745464],
                "offices": [
                    {
                        "type": "Точка",
                        "adress": "ул. Пушкино",
                        "schedule": "without",
                        "phones": ["[phone]", "[phone]"]
                    }
                ]
            }
        }
    }