Appian Integration with Azure Service Bus

Hi all, Have any of you worked on an Appian Integration with Azure Service Bus using REST API? Cannot find any information on the same available in forum. Also, Im unable to find functions for HMAC-SHA256 and URL Encoding which are necessary for creation of Shared Access Signature Token required for Authorization with Azure Service Bus.

Can any of you advise of you have any experience in this?

 Please refer following documentation for Azure Service Bus REST API

https://docs.microsoft.com/en-us/rest/api/servicebus/send-message-to-queue

https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-sas

Thanks, Pavan