My result JSON:
{"@type":"setChatMemberStatus","chat_id":-1001602686583,"member_id":{"@type":"messageSenderUser","user_id":510257258},"status":{"@type":"chatMemberStatusLeft"}}
But this not working. Please help my to make correct JSON.
The JSON seems correct, which Telegram version are you using? maybe you are using a old tdlib version, try to download the latest version (1.8.1 from your account) and test again. Old versions doesn't support this feature.