{
  "manageEntity": {
    "action": "Save",
    "entityId": "1567926587",
    "entityType": "Track",
    "nonce": "0x44073299b75e9fc61fd3ff4f6f7a1aa996d816340e3046b129cdc1cdb2766274",
    "signature": "0x02942701be5a1cf9ced9c22f65009695409129d5919e6ef5bd885a4164f632991fe7c2295fd3ca18f1d13a73923d619d42f1f91a3d2c8028c74b4960902ae6261b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}