{
  "manageEntity": {
    "action": "Save",
    "entityId": "854906315",
    "entityType": "Track",
    "nonce": "0x201e47b2eab732c971dc63a71fcf53c733dc95b0bea8661f7094ef97633c98d9",
    "signature": "0x7bab80d5aa90c0df47ba8d06f44454aca6f45dd0cf1d0cd809a784601155c56a45543d0ed06d0118759281c600bf4087ecbad83503ce661029fd84792bd0b5731c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}