Example event for new user in conversation

{'type': 'message_new', 'object': {'message': {'date': 1605027856, 'from_id': 242175861, 'id': 0, 'out': 0, 'peer_id': 2000000004, 'text': '', 'conversation_message_id': 16, 'action': {'type': 'chat_invite_user', 'member_id': -199823823}, 'fwd_messages': [], 'important': False, 'random_id': 0, 'attachments': [], 'is_hidden': False}, 'client_info': {'button_actions': ['text', 'vkpay', 'open_app', 'location', 'open_link'], 'keyboard': True, 'inline_keyboard': True, 'carousel': False, 'lang_id': 0}}, 'group_id': 199823823, 'event_id': 'gbcmrjuhsp'}