IdentityNow connection to Appian

We are wanting to setup a Web API connection from IdentityNow to Appian.  Does anyone have any experience with IdentityNow and Appian?  IdentityNow is our source of record for all of our users in the company.  When people leave the company they will be deprovisioned in IdentityNow which we want to make a call to Appian to deactivate the user's account.  Any recommendations or information would be greatly appreciated.

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