{
  "manageEntity": {
    "action": "Save",
    "entityId": "1753789071",
    "entityType": "Track",
    "nonce": "0xf347baeac89fe002dc3fe2a5135eace81f998d811b687dc5082e110e1a1a15a5",
    "signature": "0xcbc76afec1eb9aba09a2549b99fc95f2da79df30a13c8e3df036aaf3cd59e99611acc1071ab738a54d0b7556f4152ebc2fbd7455104278f8aa164d015e1e181f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}