Node.js Base64URL vs Base64 implementation: Workflow for Webhook processing

Node.js guide for base64url vs base64 implementation in Webhook processing: checks, failure modes and no-upload steps. Updated 2026.

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Execution checklist

  1. Validate payload and identify first non-recoverable parser/decoder error.
  2. Normalize format assumptions for Node.js and Webhook processing workflows.
  3. Apply minimal fix and rerun validation locally without upload.
  4. Capture final runbook in team docs and link to related guide pages.

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