Endpoint Token: https://apic-dev-gw-gateway-cp4i.apps.demo.ibmdte.net/ibm-demos/sandbox/oauth/oauth2/token
Guía: https://www.ibm.com/cloud/garage/dte/tutorial/apic-dev-jam-lab-3-add-oauth-security-your-api
El client_id y access_token de la aplicación Sandbox Test App