{
  "manageEntity": {
    "action": "Save",
    "entityId": "1162226999",
    "entityType": "Track",
    "nonce": "0x505c8e6f614c9e533fb5299f988f2eb6f20a289922fc2c4ea76e6f7a70ec93bd",
    "signature": "0xf759f1f59079dce686b7271e82cfed95b53546773a00a665edd05aa679c8aae10d063ae5ea8c5fe6f18eb99c7bcfd72292ead280a4a56921803288b0420dde691b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}