Processing a Webhook Payload

How to parse the CloudEvent envelope, base64-decode the `data_base64` field, and deserialize the RTGS.global message payload into your domain model. Run this after both signatures have been verified.

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// dotnet add package Azure.Messaging.CloudEvents
using Azure.Messaging;

// CloudEvent.Parse decodes data_base64 automatically.
var cloudEvent = CloudEvent.Parse(BinaryData.FromString(rawBody))
    ?? throw new InvalidOperationException("Invalid CloudEvent");

// Data.ToString() gives the decoded UTF-8 string.
var rtgsPayload = cloudEvent.Data!.ToString()!;
var eventType   = cloudEvent.Type!;