{
  "manageEntity": {
    "action": "Save",
    "entityId": "922589",
    "entityType": "Track",
    "nonce": "0x0e99c83414ba39817509888e046250f68040bc061ceb41b8facb8db55681c374",
    "signature": "0x429d4c7164cb30c6e67e88d95fc984595398a9b26b6740c878f741499ac129c174b2b3c1859a4702a00adc291509ce96d6610e711578363f286f1b9c027e99d81b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}