{
  "manageEntity": {
    "action": "Save",
    "entityId": "93135828",
    "entityType": "Track",
    "nonce": "0x40863b22ee9f3e10d973c2c206f08f208901a2463a65887bbdf64160ead0f099",
    "signature": "0x3f94c835d526078c93c025caf4d5b188014a781c12a20118a2f8d7e9a0cbb6d8513d228a5af49a9635516263e9c2c52597e9c4d0e5e0abaa7d95a27a15b2e01f1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}