{
"manageEntity": {
"action": "Save",
"entityId": "971667868",
"entityType": "Track",
"nonce": "1791844629124027580",
"signature": "0x377e7d61bc6ef6f8573762fbdbd93fb7080d38a730609c7efb8be65bb23af1f15d488cddbef2daf13aa639ebafd67d0e1b045c837f2c75b1a66b8b2a538495311c",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}