code: public Map<String, Object> update(String entityName, String groupId, String entityId, Map<String, Object> hash, MnoHttpClient httpClient)
  			throws AuthenticationException, ApiException, InvalidRequestException {
  		Map<String, Object> envelope = new HashMap<String, Object>();
  		envelope.put(entityName, MnoMapHelper.toUnderscoreHash(hash));
  		envelope.put("resource", entityName);
  		String payload = GSON.toJson(envelope);
  
  		return update(entityName, groupId, entityId, payload, httpClient);
  	}
docs: apiService Update an entity remotely
  
  @param entity
  name
  @param groupId
  customer group id
  @param entityId
  id of the entity to retrieve
  @param hash
  entity attributes to update
  @param httpClient
  @return updated entity
  @throws AuthenticationException
  @throws ApiException
  @throws InvalidRequestException