{"event":"reply_playback_mode_selected","callId":"call_fixture","traceId":"trace_fixture","turnId":"turn_fixture_001","seq":1,"replyPlaybackMode":"streaming_tts"}
{"event":"reply_state","callId":"call_fixture","traceId":"trace_fixture","turnId":"turn_fixture_001","seq":2,"replyPlaybackMode":"streaming_tts","state":"reply_output_pending"}
{"event":"reply_state","callId":"call_fixture","traceId":"trace_fixture","turnId":"turn_fixture_001","seq":3,"replyPlaybackMode":"streaming_tts","state":"reply_playback_started"}
{"event":"reply_audio_chunk","callId":"call_fixture","traceId":"trace_fixture","turnId":"turn_fixture_001","seq":4,"replyPlaybackMode":"streaming_tts","audioChunk":{"chunkSeq":1,"format":"pcm_s16le","sampleRate":16000,"channels":1,"payloadBase64":"AAAAAAAAAAA=","last":true}}
{"event":"turn_completed","callId":"call_fixture","traceId":"trace_fixture","turnId":"turn_fixture_001","seq":5,"replyPlaybackMode":"streaming_tts","completion":{"messageId":"msg_fixture_alias","audioChunkCount":1}}