| appIndex | Numeric appIndex that corresponds to appId in App Center | INTEGER |
| sessionId | A key value that identifies it as a single client session | INTEGER |
| playtime | Time left in the foreground between ccu log transmission words (in seconds) Because it is based on the foreground, the numbers rise to 0, 120, 240, and 360 | INTEGER |
| playOutTime | Background time. Time not actually played | INTEGER |
| prevLatency | When transmitting concurrently in the previous cycle, the Request-Response response time of this https protocol was milliseconds (1/1000th of a second) | INTEGER |
| timestampMillis | The current client time value in milliseconds (1/1000th of a second) while calling Active | INTEGER |
| timestampMillisStandby | The current client time value in milliseconds (1/1000th of a second) when calling StandBy | INTEGER |
| activeTime | Actual playtime (seconds) since the previous concurrent transmission * Measures just foreground status, with a maximum of 120 seconds | INTEGER |