{
  "manageEntity": {
    "action": "Save",
    "entityId": "1329987578",
    "entityType": "Track",
    "nonce": "0x33626490ed50ae2545ef832f09b418738fd77696aacf37c093f155b59c683c56",
    "signature": "0x65730ef486d0cc1fdebc4a669edd0455b683510ecf2e852f633095277cd5d8b91ea1bd8a7e98f51fc4f4143c7d375f5bef5a6c72db385e2b165f8dddb7857b951c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}