{
  "manageEntity": {
    "action": "Save",
    "entityId": "960916",
    "entityType": "Track",
    "nonce": "0xdcf77dca47996e18dc686cac387cb3e75f7ff096fc36f6f2bd675b2f398e692d",
    "signature": "0xa51988f380f4a800b091407e81cd656c88dd248e0b0f56cbaa2fb7685452ebf82366f1548956e4375427a6ca4cc7cdee965de4c4dc2ba0b7928573bbd8ed1e371c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}