{
  "manageEntity": {
    "action": "Save",
    "entityId": "33067",
    "entityType": "Track",
    "nonce": "0xdfc8cf96f05334a77d91b1a9e61817a01cef5fcfddd9a8a3e1810f7abe893616",
    "signature": "0x0cf76c3a6a84668a67301856458837c3498f54b760c7cf8b6e0961d8efb29e780701576e441300f00b32534ead78908ab06e4cebf0b7ed43b53a00f4778801eb1b",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}