How do I debug a 'handle json.parse error' when the JSON is generated by a third-party service?

When dealing with JSON from third-party services, debugging can be more challenging. First, contact the service provider to understand the expected JSON format and any known issues. Check the service's documentation for API usage examples and error codes. Use logging to capture the JSON data and surrounding context before parsing to aid in identifying the source of the problem. Look for specific error messages from the service.