{
"manageEntity": {
"action": "Save",
"entityId": "952812232",
"entityType": "Track",
"nonce": "1792343163044229427",
"signature": "0xbaeb5b9da314d2eb7045f895b6b767dd9970607b2507eb6965412f8b0eca72625394699b996fb9ea53c5cc999c3dcae50f0801604a14ca96a759384fabe39bba1b",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}