token: ********************{
"slice_base64": "string",
"bg_base64": "string"
}curl --location 'http://api.nonebot.top/api/v1/captcha/2000?token=%3Capi-key%3E' \
--header 'Content-Type: application/json' \
--data '{
"slice_base64": "string",
"bg_base64": "string"
}'null