{
  "manageEntity": {
    "action": "Save",
    "entityId": "1175926203",
    "entityType": "Track",
    "nonce": "0xf611809183483ef71eeaacea7b53cc2c93ea122e449865478783fbd3f60740b1",
    "signature": "0x36695c18ef90013936ca759ecf739ecde014639f9bdc178431df5456f183e71558949f96b4d69624a872f8ad76b4efe63206430e91780e5d4202c051c1d8b7711c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}