{
  "manageEntity": {
    "action": "Save",
    "entityId": "1426998461",
    "entityType": "Track",
    "nonce": "0x06eebd372969bc8a8c6df4f4d815a811b9d4ca3732d04c6798be8f0430fe175b",
    "signature": "0x37d0ac78d79e87b67118bea958085da4564b9ab8b496c2ccc389e7fc0587bcd86571b67b3908487cabacd760b34359b19d9ad0cb053451dc9bb343e68a7803c21c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}