{
  "manageEntity": {
    "action": "Save",
    "entityId": "1026233",
    "entityType": "Track",
    "nonce": "0xcf76b6f90996276de5043b70d6154337a356ad5c3d4e81ce5f6bffb25d79a811",
    "signature": "0xbfe6f3e06c38d0a5918bc3d0483198d3cd831df1def9e6a280967e3a40922de8654a95ef837be81a4bdcf8e889083e7234514d3780b353c06f0195e3523a85be1c",
    "signer": "0xC2A9E3b7F06e60ef97DFB73522582B613021cf7A",
    "userId": "265825696"
  }
}