{
  "manageEntity": {
    "action": "Save",
    "entityId": "2026008727",
    "entityType": "Track",
    "nonce": "0x4d10703afbf0e1f40e424ac834ec88ecdf19148cf7d1e940643f7a317a7b5354",
    "signature": "0xef135b8f9a405ea017eecbd6fb5588ff51e384fc988735e149e1a19f40259c0e41148a4977a7929c4ecd1b74d67f3db218230cf44bf4facc9a41e339947666e61c",
    "signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
    "userId": "29088079"
  }
}