AcceptFormat - The format in which to receive the web server’s response. The following options are supported: ANY - the default value, XML , JSON , and CUSTOM . When choosing the CUSTOM AcceptFormat, if an Accept or accept Header parameter is present, then it will be sent as the custom accept format. If no header parameter is set, accept will get the RestSharp default value: application/json, application/xml, text/json, text/x-json, text/javascript, text/xml
Reference: https://docs.uipath.com/activities/docs/http-client#input