Try is like this
$.ajax({
url: "https://api.instagram.com/v1/users/1574083/follows?",
type: 'GET', // type instead of dataType
dataType: 'json', // or jsonp for cross-domain
data: {
access_token: token
},
success: function (result) {
alert(result.meta.code);
alert(result.data.username);
},
error: function () {
alert("error");
}
});