{
  "manageEntity": {
    "action": "Save",
    "entityId": "2051587644",
    "entityType": "Track",
    "nonce": "0xc10f1f3d488865b78b9725d3ff29d2cd1ee6ab981b7b87db3b3c982a57065e13",
    "signature": "0xb12bada6ae4109018a12013d78239393d4a06b82b024b1eb82ac135b059ea2cb62923954f5c92fdcfe066b9b5a37651c8155988cb30255447231143a0fe159ce1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}