{
  "manageEntity": {
    "action": "Save",
    "entityId": "276292847",
    "entityType": "Track",
    "nonce": "1789462280747396788",
    "signature": "0x88c07be7d7ed21a64816d08c2231a58730310e8bf61147bcd090d8b8702045bb78c74c7b71275c3aaad42047aaeb8b1f1a747ca7cbb7bf03ee96b2e70c578a411b",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}