{
"manageEntity": {
"action": "Save",
"entityId": "995459266",
"entityType": "Track",
"nonce": "1792407411108197478",
"signature": "0x95bc46a2caba628a2b6f7b602eb7041ce9f8786455115a6b952be6e5e42ce56223a344a00394e87500437cfd53704f84e352cfe8066c79ae40d200deb3658dab1b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}