{
  "manageEntity": {
    "action": "Save",
    "entityId": "1843046009",
    "entityType": "Track",
    "nonce": "0x070dbb91625ae4330d16d4dbfb57aecb889aa163541e1760430d6d8d58f670e9",
    "signature": "0x0d345846dd4f662971222ccb5fe951e469a416470351441bdf528675b6394d145b97c98d9904f4c7a41f8540f074c4770afc122050260018309ae71e5b27d90d1b",
    "signer": "0x9881bA04eA95d8a4De5594aBC9DBd5c96F38eF34",
    "userId": "211307"
  }
}