{
  "data": {
    "ID": 9876543,
    "Url": "https://example.com/webhooks/postmark-updated",
    "MessageStream": "outbound",
    "HttpAuth": {
      "Username": "webhook_user",
      "Password": "webhook_password"
    },
    "HttpHeaders": [
      {
        "Name": "X-Custom-Header",
        "Value": "custom-value"
      }
    ],
    "Triggers": {
      "Open": {
        "Enabled": true,
        "PostFirstOpenOnly": false
      },
      "Click": {
        "Enabled": true
      },
      "Delivery": {
        "Enabled": true
      },
      "Bounce": {
        "Enabled": true,
        "IncludeContent": true
      },
      "SpamComplaint": {
        "Enabled": true,
        "IncludeContent": false
      },
      "SubscriptionChange": {
        "Enabled": false
      }
    }
  }
}