{
  "manageEntity": {
    "action": "Save",
    "entityId": "1802542101",
    "entityType": "Track",
    "nonce": "0xcaffc2146c8726f67b6e2c74eb7bd02965b0ccdffaf6d9b16cb002c6b580e6fd",
    "signature": "0x19077a70c5acdf6a2995ff5280f6051273d5239e9c90bd4a4d5c1efe9de1036459ca9ce9b6452f72a3a4439db56528a700ebc097098277c189ccdd7a733684d91c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}