DocuSign Legacy Header Authentication Error
问题 Thanks in advance for any and all help. I am trying to implement "legacy header authentication" as described on this page: https://docs.docusign.com/esign/guide/authentication/legacy_auth.html I have my email address, password, and integration key pieced together in the X-DocuSign-Authentication header as follows: "{\"Username\":\"" + usr + "\", \"Password\":\"" + pwd + "\", \"IntegratorKey\":\"" + intKey + "\"}"; I have tested this mechanism from Postman, Fiddler, and C# (using the example