{
  "manageEntity": {
    "action": "Save",
    "entityId": "1170297769",
    "entityType": "Track",
    "nonce": "0xd63db995114bfa2f1c81f8ab3d225e9370f43b87f22f444f5e4800195abcd716",
    "signature": "0xf0f382b93ef122b79af61385a43994c8df3dd9c7ae50f71c7546e093b73759285e2bc175e97952fb91452f6c48fb36a106fc526f090cbac0ba227c76e4669ad61b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}