{
"manageEntity": {
"action": "Save",
"entityId": "80911015",
"entityType": "Track",
"nonce": "1792384558787477443",
"signature": "0xc1af499c38923805a5cad3b0372048a4ca6119a15cbefdf2f84fef4a4f0cac5448416115a7d2fe4050210ab35061541542a82bacbe41f98eb48952c756d063241c",
"signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
"userId": "105562689"
}
}