curl --location 'https://api.sandbox.qfast.id/v1/oauth2/token' \
--header 'Accept: application/json' \
--header 'Accept: application/json' \
--header 'Content-Type: application/json' \
--data '{
"grant_type": "client_credentials",
"client_id": "<your_client_id>",
"client_secret": "<your_client_secret>"
}'