Formatting the Authorization header

If you require API credentials and do not already have them at hand, please see [Setting up the eSign API Authorization]
The Authorization header needs to be formatted like this:

oauth_signature_method="PLAINTEXT", 
oauth_consumer_key="[Client Credentials Identifier]", 
oauth_token="[Token Credentials Identifier]",  
oauth_signature="[Client Credentials Secret]&[Token Credentials Secret]"

Replace the values above with the credentials that you just created without the brackets ([ ]).

You can then create a new header with the key set to “Authorization” and the value being the string you created above.

Authorization: "oauth_signature_method="PLAINTEXT", oauth_consumer_key="Client Credentials Identifier", oauth_token="Token Credentials Identifier", oauth_signature="Client Credentials Secret&Token Credentials Secret""