code: public void like(Long postId, String reblogKey) {
          Map<String, String> map = new HashMap<String, String>();
          map.put("id", postId.toString());
          map.put("reblog_key", reblogKey);
          requestBuilder.post("/user/like", map);
      }
docs: Like a given post
  @param postId the ID of the post to like
  @param reblogKey The reblog key for the post