curl --location --request POST 'https://oauth-login.cloud.huawei.com/oauth2/v3/token' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data-urlencode 'grant_type=client_credentials' \
--data-urlencode 'client_secret=CLIENT_SECRET' \
--data-urlencode 'client_id=CLIENT_ID'
CLIENT_SECRET
: 'App Secret' field on Huawei UI