{
"manageEntity": {
"action": "Save",
"entityId": "2147083973",
"entityType": "Track",
"nonce": "1794244701908016326",
"signature": "0x0c0b827f1d208776f967839d983179265430bffe46133b99f62b216282385ca7304a964a74936228391f07d7ba88193378dc8a0d8c7dc271ab4faa83c6dbcc511b",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}