{
  "manageEntity": {
    "action": "Save",
    "entityId": "1292669739",
    "entityType": "Track",
    "nonce": "0x3acaba3c98c5595e4471ca9ceacba7d674e44a7bfc409f54172900a8b8d880aa",
    "signature": "0xdea7213e3aa4b9260138762735f5b2dd60c9719660a57b7a6875b0685fe209f229861cb8d8abda1091012c0a4172b671a211a08872a3c9a86ddb4dcbda65b6a21c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}