{
  "manageEntity": {
    "action": "Save",
    "entityId": "2064268915",
    "entityType": "Track",
    "nonce": "0xdb824f63b29459c5bd401a1c0637084c76a410663d8f0f80df705c324e59067c",
    "signature": "0x3fea6eb955a0b036ead838ede6be1ae51fe79a1f8d661e498684d6825e4995ba0bc8e81e5f20bce881533e486ce2edec49b6704b3e50a937481fa77bb0f3b8ae1b",
    "signer": "0x9981707E90f9BCeE948E5eA5409A4D1b982c3AF4",
    "userId": "400587006"
  }
}