{
"manageEntity": {
"action": "Save",
"entityId": "672517579",
"entityType": "Track",
"nonce": "1792290739510462947",
"signature": "0xdcfcb149606d0d3327cc9ed8ddbc27dfd0b43c1dfe0d699ce6500ef4b9f2a79b234c59ece62efcf6221dee55c5a482b5b30c16e8fa5237fe63b66fc3515c0d291b",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}