[
    "users":
        [
            [
                "user": [
                    "name": "Mariano",
                    "lastName": "Achaval",
                    "contacts": []
                    ]
            ],
            [ "user": [
                "name": "Emiliano",
                "lastName": "Lesende",
                "contacts": [
                    [
                        "contact": [
                            "name": "Uri S."
                        ]
                    ],
                    [
                        "contact": [
                           "name": "Dan D."
                        ]
                    ]
                ]
            ]
            ],
            ["user": [
                "name": "Luis",
                "lastName": null
            ] ]
        ],
    "addresses": [ [ "street": "Cordoba 1234" ], [ "street": "Corrientes 248" ]],
    "phones": [1234, "123", true],
    "intArray":   [1,2,3] as int[],
    "longArray": [1,2,3] as long[],
    "stringArray": ["matias","achaval"] as String[],
    "booleanArray": [true,false] as boolean[]
]