{
  "manageEntity": {
    "action": "Save",
    "entityId": "25517475",
    "entityType": "Track",
    "nonce": "0x3bbb6e88e9674a6816e117886ec16e03d88b595c8caa0bce55fa9570524cbe1f",
    "signature": "0xe4e237c9cc76fc218484d9dcb2a6b23ca49894fe261f3b3429dfa6aa3350a5ea55fae8755fc8e9ceb66b136f7d3f246341b71fe42318c158fc538c2126013cb91b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}