{
  "manageEntity": {
    "action": "Save",
    "entityId": "859779598",
    "entityType": "Track",
    "nonce": "0xddda5d25de30cb8028904b745226a10b1e9db158e95b9b8760610e8f839ab58c",
    "signature": "0x952164a7454ac30cb8bb4be71e2b7ef35de6693c9d6aaa24061efee43c2ae8122690c2a05ebda67ddeb9d8bb74d0e9ee33c168a4e296b85ba0f146eb54e87f3c1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}