nmi-webhooks

Receive and verify NMI (Network Merchants) webhooks. Use when setting up NMI webhook handlers, debugging Webhook-Signature verification, or handling transaction events like transaction.sale.success, transaction.auth.success, transaction.refund.success, and transaction.void.success. Note: NMI does NOT use Standard Webhooks — the Webhook-Signature header is "t=<nonce>,s=<sig>" (comma-separated) where t is a NONCE (not…