{
"userPoolId": "string",
"secret": "string"
}curl --location --request POST 'https://core.authing.cn/api/v2/userpools/access-token' \
--header 'Content-Type: application/json' \
--data-raw '{
"userPoolId": "string",
"secret": "string"
}'{
"accessToken": "string",
"iat": "string",
"exp": "string"
}