{
  "manageEntity": {
    "action": "Save",
    "entityId": "2112080906",
    "entityType": "Track",
    "nonce": "0xad85f77539c8408df983216fda2656d00bff3d5fd7bdb83232c52e50dbae0d78",
    "signature": "0x7e90fc3d5835baddf491332402fe7af0032024e8c05010fa3c9656d6c069be023b2da3a2a1893f5bc40f81353b677580ae86b99288f1d8fb1f2944560d14db4b1c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}