I've tried it a few different ways but in my AMP_Log file I always get
Misused header name. Make sure request headers are used with HttpRequestMessage, response headers with HttpResponseMessage, and content headers with HttpContent objects.
I've made this request with this payload using curl and the payload seems fine and after finding this error message I am lost as to what the necessary input for this field is. Leaving the field blank results in no error but also no response from the service. Any help is appreciated. Thanks!