code: public EntityResult updateEntityAttribute(final String guid, final String attribute, String value)
              throws AtlasServiceException {
          LOG.debug("Updating entity id: {}, attribute name: {}, attribute value: {}", guid, attribute, value);
          JSONObject response = callAPIWithRetries(API.UPDATE_ENTITY_PARTIAL, value, new ResourceCreator() {
              @Override
              public WebResource createResource() {
                  API api = API.UPDATE_ENTITY_PARTIAL;
                  WebResource resource = getResource(api, guid);
                  resource = resource.queryParam(ATTRIBUTE_NAME, attribute);
                  return resource;
              }
          });
          return extractEntityResult(response);
      }
docs: Supports Partial updates
  Updates property for the entity corresponding to guid
  @param guid      guid
  @param attribute  property key
  @param value     property value