code: public Map<String, Object> create(String entityName, String groupId, String jsonStr, MnoHttpClient httpClient) throws AuthenticationException, ApiException, InvalidRequestException {
  		String jsonBody = httpClient.post(getCollectionUrl(entityName, groupId), jsonStr);
  		Type typeOfHashMap = HashMap.class;
  		return GSON.fromJson(jsonBody, typeOfHashMap);
  	}
docs: Create an entity remotely
  
  @param entity
  name
  @param groupId
  customer group id
  @param jsonStr
  attributes as json string
  @param httpClient
  @return created entity
  @throws AuthenticationException
  @throws ApiException
  @throws InvalidRequestException