[
    {
        "id":1,
        "firstName":"Kate",
        "lastName":null,
        "phoneNumbers":[
            {
                "type":"mobile",
                "number":"721111222"
            }
        ]
    },
    {
        "id":2,
        "firstName":"Martin",
        "lastName":null,
        "phoneNumbers":[
            {
                "type":"work",
                "number":"222456789"
            },
            {
                "type":"home",
                "number":"222555444"
            }
        ]
    }
]