{
  "manageEntity": {
    "action": "Save",
    "entityId": "1706261774",
    "entityType": "Track",
    "nonce": "0x67f0c288efa411018f510248af49bc00e92416d16f59a9a3d43f2d5f61fd7e56",
    "signature": "0x3df9c130c9022354bf1e06e5402eef642a73e9e2b5b88e9b2453c87ee6d29b2521bc321cff6b53ef8860b63366f54879e91ada3be6eaa045e9dbb655817439621b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}