ServiceNow Event Management Integration

Has anyone used the out of box integration that is available with ServiceNow Event Management for Solarwinds Connector?

We are not able to post the REST API to SolarWinds node. Following are the details:

https://<IP>:17778/SolarWinds/InformationService/v3/Json/Query?query=SELECT%20TOP%2010%20NodeID%20FROM%20Orion.Nodes

Basic Auth:

Content Type : application/json

ServiceNow Event management uses this API to poll the alerts. I tried to use the Postman as well but it gives me the same error. 403-forbidden.

Is there any specific access required on Orion?

Thanks

Pranav