{
  "manageEntity": {
    "action": "Save",
    "entityId": "1132443843",
    "entityType": "Track",
    "nonce": "0x11efa57d8d3bfb5bf82d2681268d4bfe01764beb62d48a27387a14f1b48e865d",
    "signature": "0x5dabaf8b30cb1317b356bd631ca47ca71d902c770b032c77abb747f793aa359f0b3006891374ff0746dcf56883d063b33b8d0c872555dcbc7d493bee1790a5421c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}