invalid_json

Signal webhook: the alert body is not a JSON object.

HTTP 400. Nothing reached the broker.

Likely causes:

• The alert message is empty or plain text.
• The JSON has a typo, often a missing quote or comma.

What to do: Paste the JSON message from the dashboard into the alert’s Message box. Nothing was sent.

Retry: No. The same request gets the same answer; change something first.

Listed under Signal webhooks (TradingView) in Errors. Send the error’s requestId to support and we can find the request.