{
"manageEntity": {
"action": "Save",
"entityId": "1908829638",
"entityType": "Track",
"nonce": "1792353314494553055",
"signature": "0xe7d16aefa4dfdcf97a3b29e2c6111d6eb3359dc1a79689c2b352e813ef7d3d3d58e32d99a9ff6d437a31dd1e276ead4290d00900d9603a6039813d5ab6a197041c",
"signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
"userId": "105562689"
}
}