[
    "a string",
    0.54,
    123,
    false,
    null
]
{
    "empty object" : {},
    "primitive types" : {
        "string" : "a string",
        "number" : 0.54,
        "integer" : 123,
        "boolean" : false,
        "null" : null
    },
    "complex object" : {
        "firstName" : "John",
        "lastName" : "Smith",
        "age" : 25,
        "address" : { "streetAddress" : "21 2nd Street", "city" : "New York", "state" : "NY", "postalCode" : "10021" },
        "phoneNmuber" : [
            { "type" : "home", "number" : "212 555-1234" },
            {
                "type" : "fax",
                "number" : "646 555-4567"
            }
        ]
    }
}