def METHOD_NAME():
    user_id = request.json.get("user_id", "")
    entity_info = request.json.get("entity_info", {})
    entity_substr_list = entity_info.get("entity_substr", [])
    entity_ids_list = entity_info.get("entity_ids", [])
    tags_list = entity_info.get("tags", [])
    el[0].add_custom_entities(user_id, entity_substr_list, entity_ids_list, tags_list)
    logger.info(f"added entities {entity_info}")
    return {}