{
  "manageEntity": {
    "action": "Save",
    "entityId": "893676006",
    "entityType": "Track",
    "nonce": "0x417e39d1a26a61298c14c15f3eb448fefdb7c8e7ae5a39d9bf108e43e3eb0c25",
    "signature": "0xc3b91a609e5da26848e33b0847b093d46d0c1dfbafe8a94bfc1fd3d8922383127a22ea04b5fb43ee27793f1870f34b6daa83c03f534c198f6e5dc269b7e30aaa1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}