{
  "manageEntity": {
    "action": "Save",
    "entityId": "1741809149",
    "entityType": "Track",
    "nonce": "0x11b7be7bd0c876355cbf219df174c06241356021cc68dd60638d6dea974e0df6",
    "signature": "0xcaaf4a198adef12e661bfae71532b993c97aa2bac59e78cbaf756a7193bafd001cb7c0e60c66c81fb96d2fd7ce13ff00e0cf262bf207d4301ae2a1b830de28a01b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}