{
"manageEntity": {
"action": "Save",
"entityId": "1912641587",
"entityType": "Track",
"nonce": "1792301933821646226",
"signature": "0x67f6689485985d9df9317939705ab9b66e501283210701e049803722d6a4c9423e00dac7d747d1be44b9e9c7857f03ba58a4020f9c4a511ddcce674c6fff37111c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}