{
"manageEntity": {
"action": "Save",
"entityId": "1687463125",
"entityType": "Track",
"nonce": "1793191563018883246",
"signature": "0xa8f94915c707b7adda70512055e32cc8682af49de4211810a7071da2cd09c53c63d28ef494ed4b1bc3a2669682bf6c6eff6df0024a644a35ee1cd52158c5c35d1b",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}