The Vonage Business Cloud User API enables you to retrieve information about users. Your application must subscribe to the Provisioning API suite to use this API.
curl \
-H "Authorization: Bearer $API_KEY" \
https://api.vonage.com/t/vbc.prod/provisioning/api/accounts/{account_id}/userscurl \
-H "Authorization: Bearer $API_KEY" \
https://api.vonage.com/t/vbc.prod/provisioning/api/accounts/{account_id}/users/{user_id}