{
  "manageEntity": {
    "action": "Save",
    "entityId": "1048773202",
    "entityType": "Track",
    "nonce": "0x144064f133b262b7e19c1c30dbb8c7a3dcf38717a70c4e20345f21c95966ff3d",
    "signature": "0x73932ccf2f9c0d6173107c3ee239fe339e3e9d41f78d0b24fc0892317e82361663382585a97778e3fd193fc35702cca967a796ae6abfb4b6dab528aafc1e9f091b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}