{
  "manageEntity": {
    "action": "Save",
    "entityId": "1032063",
    "entityType": "Track",
    "nonce": "0x30aeaee1f056b8b20564c40be476c37b4d5e9203031ce2eb54a4824a2014d71a",
    "signature": "0xf55ffbc7abfccf9f7c9fdc84168cc09e2326467f1e4a66553c322788d12ee56753832c6ff030f40d8964fef0848529f0e88b7a165e28998f3534ce7173d596a51c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}