{
   {
      name: "assassins_creed",
      href: "games/assassins_creedId123"
   },
   {
      name: "bioshock",
      href: "games/bioshockId456"
   },
   {
      name: "clean_code",
      href: "books/clean_codeId789"
   },
   {
      name: "christmas",
      href: "events/xmas001"
   }
}

List<String> hrefLinks = list.stream()
        .map(e -> (String) e.get("href"))
        .collect(Collectors.toList());

private Observable<List<JSONObject>> dashboard(String access, String urlFragment, Queue<String> errors) {
Client client = ClientBuilder.newClient();
return RxObservable.from(client).target(urlFragment).request()
            .header("Authorization", access)
            .rx()
            .get(new GenericType<List<JSONObject>>(){})
            .onErrorReturn(throwable -> {
                errors.offer(throwable.getMessage());
                return Collections.emptyList();
            });
}