I am aware of the fact that when all the parties available in the signing ceremony signs the document then webhook can post the data to the URL but I want webhook to post the data for each individual signing the envelope. In my case two participants are involved in the signing process and first person is doing the embedded signing. So when first person completes the signing process i want to update the stage. Please suggest me a way if i can do this via Docusign connect or is there any workaround for this.
In your Connect configuration, whether at Account-level (Web App "Settings") or Envelope-level (eventNotifcation in REST API), register for Recipient Events rather than or in addition to Envelope Events. In your case, that would be Recipient Completed. Connect will then be triggered by the signer finishing their signing. The Connect message payload will still be the entire structure, but you will notice the change in Status under the particular signer's RecipientStatus.