My API returns this JSON:

{
    "success": true,
    "message": "User list retreived",
    "data": [
        {
            "id": "1",
            "username": "admin",
            "password": "$2y$10$1h8jP8./G2bvlai3Prgwuu9fHHFsunerV0/aFo.JKKcWPh1MelyHy",
            "created": "2018-04-15 11:53:28",
            "modified": "2018-04-15 11:53:28",
            "grade": "4",
            "department": "5"
        }
    ]
}

This is my android function that reads the JSON object:

    private void readUsers() {
        userList.clear();
        managerAdminApi.user(new Callback<ArrayList<ObjectUser>>() {
            @Override
            public void onResponse(@NonNull Call<ArrayList<ObjectUser>> call, @NonNull Response<ArrayList<ObjectUser>> response) {
                ArrayList<ObjectUser> JsonList = response.body();
                for (int i = 0; i < requireNonNull(JsonList).size(); i++) {
                    userList.add(new ObjectUser(
                            JsonList.get(i).getId(),
                            JsonList.get(i).getUsername(),
                            JsonList.get(i).getPassword(),
                            JsonList.get(i).getCreated(),
                            JsonList.get(i).getModified(),
                            JsonList.get(i).getGrade(),
                            JsonList.get(i).getDepartment()
                    ));
                }
                uAdapter.notifyDataSetChanged();
            }

            @Override
            public void onFailure(@NonNull Call<ArrayList<ObjectUser>> call, @NonNull Throwable t) {
            }
        });
    }

I am looking for a way for android to read the data list from the response into an array. But as you can see I have the success and message fields in the response. How can I read just the data array part of the response? Thanks