code: public <T extends BullhornEntity> String convertEntityToJsonString(T entity) {
          String jsonString = "";
          try {
              jsonString = objectMapperStandard.writeValueAsString(entity);
          } catch (JsonProcessingException e) {
              log.error("Error deserializing entity of type" + entity.getClass() + " to jsonString.", e);
          }
          return jsonString;
      }
docs: Takes a BullhornEntity and converts it to a String in json format.
  
  @param entity
  a BullhornEntity
  @return the jsonString