{
  "manageEntity": {
    "action": "Save",
    "entityId": "524824990",
    "entityType": "Track",
    "nonce": "0x44e42cdce1f9fe93b032ee3617b2b01871f801519c39e62cfbb68eb937305d44",
    "signature": "0x9313ab53a5b5fe7018b4f957eb598f0fa0efd67df218f4cb47e4a87896681f0509ddc6b503469b0a9831f914e32374cae30cb9fbd84cc60a322e108ec78a373c1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}