Python - 请求 - POST 有效负载

如何解决Python - 请求 - POST 有效负载

[Q] 请求库 - POST 负载：
嗨，我正在尝试将有效负载发布到网站。从开发控制台（网络选项卡）我发现它需要像这样的“请求有效负载”：
123:42["userData",{"name":"Doe","code":"","avatar":[9,31,13,-1],"join":"bz1nPvY09I1A","language":"English","createPrivate":false}]

我认为我正确地发送了数据，即使是 2 种不同的方式，但我收到了 404 错误：
#1 First way

url = "..."
payload = {"name":"John","avatar":[6,6,9,"join":"bz1nPvY09I1As","createPrivate": "false"}

r = requests.post(url,data=payload) #NOTICE DATA=...
print(r.status_code)

#2 Sceond way

url = "..."
payload = {"name":"John","createPrivate": "false"}
data = json.dump(payload)

r = requests.post(url,json=data) #NOTICE JSON=
print(r.status_code)

为什么 404，payload 构造错误？