{
  "manageEntity": {
    "action": "Save",
    "entityId": "1129001961",
    "entityType": "Track",
    "nonce": "0x36f63804dfbf77c2b6efbcb53932fd38df1b96a2a594293ec4efa062ff615d05",
    "signature": "0x1a6b7570c8df8eb2299e0e562565e96f2f1990d86a58c89a6a6742e68ad2e599223a4b336fc6c96806f6125fa9e76aacee7dc05625e2e1bd25ab2b198f9f3b671c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}