{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086915",
    "entityType": "Track",
    "nonce": "0x71158ed8aa17e42fa292ea069317fbd370cc9685c3c4aa879ebd4af277df6adb",
    "signature": "0x79d761c8e432bafe5f20c772ed9c7bdc22234ac973bcce45244dc06b6c04e989759e1770563d50f79a28b626c38b7124b8cfd1c61edbfdb9e351f7aa21150e8d1b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}