Create a REST API for PDF Digital Signatures with Webhooks

Overview An automation workflow that creates a complete REST API for digitally signing PDF documents using n8n webhooks. This service demonstrates how to implement secure document signing functionality through standardized API endpoints with file upload and download capabilities. Use Case This workflow is designed for developers and automation specialists who need to implement digital document signing. It's particularly useful for: Integrating PDF signing capabilities into existing document workflows API-based automation of signature processes Creating proof-of-concept implementations for document verification systems Learning n8n's webhook capabilities and file handling techniques Testing P

Help me set up the n8n workflow "Create a REST API for PDF Digital Signatures with Webhooks" (https://n8n.io/workflows/3119). It uses: Code. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.