Get external feed details

Retrieves details of a specific external feed by its UUID. **Use this to:** - Get complete configuration of an external feed - Check feed authentication settings - Review feed personalization options - Verify feed URL and parameters - Monitor feed modification history **Key information returned:** - Complete feed configuration and settings - Authentication credentials and headers - Personalization and fallback settings - Creation and modification timestamps - Cache and retry configurations **Important considerations:** - UUID must exist in your account - Provides complete feed information for troubleshooting - Essential before making modifications - Shows current feed health status - Useful for debugging feed issues