get
https://api.ext-sandbox.fourthline.com/v1/signatures//qtspAgreement
If you have the fallback QTSP option configured, use this endpoint to check if an InfoCert contract was generated to share with the client 
Important:
• Before using this endpoint, see the integration guide.
• signatureId and workflowId are string identifiers that can be used interchangeably.
The InfoCert contract was not generated