{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086917",
    "entityType": "Track",
    "nonce": "0xce04adbfaab6c1f1bd234d656a94d1fea6a8f58d007bf61299a0e25d8a18d4e9",
    "signature": "0x779a10cd1f7262af4cd9a1a9f667461ca4ec9cd216815d9246754d7c2420c3602bf588730127b44e4043b3d6ed44de8aba35ba87733ad1feebb78f2b8343efeb1b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}