{
"manageEntity": {
"action": "Save",
"entityId": "893824530",
"entityType": "Track",
"nonce": "1792524452568134585",
"signature": "0xe9c55437a679d649d38b62fb2db11fab2b3e6aa9b7b7fa5146d76fc659a4c3284f7ec97a442416a646062dca68eeeaee7e6f94a71e29f886845f36603a3c45401c",
"signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
"userId": "105562689"
}
}