{ "agent_id": "<string>", "agent_config": {}, "duration": 123, "ts": 123, "chat": "<string>", "chars_used": 123, "session_id": "<string>", "call_id": "<string>", "cost_breakdown": [ {} ], "voip": {}, "recording": {}, "metadata": {}, "function_calls": [ {} ], "call_status": "<string>" }