{
  "manageEntity": {
    "action": "Save",
    "entityId": "1029540956",
    "entityType": "Track",
    "nonce": "1792530609186362711",
    "signature": "0xf2eeea2c459c751b737005fe837f5ffb88a227e6f528300bd3dbfe0087b441e272fc5b76dfe271b794e7dac7269f5db04d3ee7dcce97418d55e1fda11789b4c71c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}