{
  "manageEntity": {
    "action": "Save",
    "entityId": "496334497",
    "entityType": "Track",
    "nonce": "0xd0aeb703a8e08d10bba7983dc1925369a516d19948956d23ada6287eabf0b60a",
    "signature": "0x7a1d415ebc11859fd77e0cfe0c25dea6021e3bc3889fc3c9cb4d6f9b3c41c50448912542ad9723c09030ecdda7bae8bfc430fd9ac183a0e273277906201cb7a01c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}