Fire Sandbox Event

Trigger a synthetic webhook event without running a real submission. Looks up all assets in the submission and dispatches one event per asset to all active subscriptions in the identity's workspace that subscribe to the given event type. No credits are consumed. Useful for end-to-end testing of your webhook handler before going live. Authentication: Requires X-API-Key header with a sandbox (sk_test_) key. Args: request_data: Event type and submission ID to target. For ``asset.processing.failed`` events an optional ``error_message`` is forwarded to subscribers; defaults to "Sandbox simulated failure". Returns: FireSandboxEventResponse with the total count of subscriptions notified across all assets. Raises: 403: If the API key is not a sandbox (sk_test_) key. 404: If the submission is not found in the authenticated workspace. 422: If the request body fails validation. Example: POST /api/v1/integrations/sandbox/events/fire { "eventType": "asset.processing.completed", "submissionId": "550e8400-e29b-41d4-a716-446655440000" } Response (200): { "dispatched": 2 }