{
"manageEntity": {
"action": "Save",
"entityId": "1585482923",
"entityType": "Track",
"nonce": "1793560740673646987",
"signature": "0x03cb39ea0923a18c14de5b615f20c28a89f271c698d8edded18a00d76d2d5833331abee89d609b27bec015b7743ea553370ceb17ea96e1ff44136c6e03c715a91b",
"signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
"userId": "105562689"
}
}