public class FooDto {
    private String foo;
    private String bar;
    private List<BazDto> bazList;

// constructor and getter/setter here

    @RequestMapping(value = URL, method = RequestMethod.POST, consumes = "application/json")
    public void processFoo(@RequestBody FooDto fooDto) {
        // code here
    }

{  "foo" : "foo", 
    "bar" : "bar", 
    "bazList" : [{
        "baz" : "baz1", 
        "quux": "quux1"
    }, {
        "baz" : "baz2", 
        "quux": "quux2"
    }]
}

{  "foo" : "foo", 
    "bar" : "bar", 
    "bazList" : {
        "0" : {
            "baz" : "baz1", 
            "quux": "quux1"
        }, {
        "1" : {
            "baz" : "baz2", 
            "quux": "quux2"
       }
    }
}