{
  "manageEntity": {
    "action": "Save",
    "entityId": "568160",
    "entityType": "Track",
    "nonce": "0x8db1959a3cd4052d6239ac7078f0e881a59236d386fd953cea7637239108912b",
    "signature": "0x622c76b5600b9ea6f0b9abdfe83cec3d909b226c3b5f8219282d7135de8d32a37b8563bdd42efd48c32d369a717daaef6ec961a67ab0ea4dd1a87ea322e389e81c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}