{
  "manageEntity": {
    "action": "Save",
    "entityId": "1016303733",
    "entityType": "Track",
    "nonce": "0x97357471746062bc13e87115f8a77671b03811565b263a68334a9bd2b3523b94",
    "signature": "0x3a28d482eb8649964a83e834ca334f80c7e1e347e7837c4fd336846f12ccfa4462cb39c35bf86dc62b41f2704833f2f127a5e32786dff2ff19e6ccbdd6ae16141c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}