igaydajiev - As you can see in this screenshot, I have provided the header as you describe, yet I still have issue with my vCO 5.1.1 build 2924 appliance. Any thoughts? Have you confirmed this actually works? Is my json format wrong... am I missing another header? (I've also tried with specifying a Content-Type=application/json and Content-Type=application/json;v=5.1.1, but that also had errors). I am using the RESTClient add-on for Mozilla Firefox for my tests against my appliance.
