{
  "manageEntity": {
    "action": "Save",
    "entityId": "1229299026",
    "entityType": "Track",
    "nonce": "0x50bcd491a1027d6e1659d487c8c5adaaf1377c0e8d41681f379ce15a639e3a29",
    "signature": "0x26196e2f01ea16e836e4e82b1fa28c0edd1502b5622015582dc0a41e193f7706769205979fc6f26d7a932e56bc92a3fea31af94a57c0958914be67d3add549f01c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}