{
  "manageEntity": {
    "action": "Save",
    "entityId": "731353047",
    "entityType": "Track",
    "nonce": "0x5a8bd674f3b4307c5fe843cef09a4342a6252224d67d56ab0f11803bf04816fb",
    "signature": "0x273d7047b542c7105d4456ec355affadbe7ed29cfbef3839c13004acf379d5163e52effd5dec491153a31913e042f5aacf6ec7ce88d4ac3608febf585d2e532c1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}