{
  "manageEntity": {
    "action": "Save",
    "entityId": "196607078",
    "entityType": "Track",
    "nonce": "0xc2c2a769f1d77a6efd1369d7c7037b1d1498b524736c085c28a8068c46886f33",
    "signature": "0xbab4b36b86312b95c6801d492f04ae71a9be52b798652d69b347d7953ff3f23317f12010e35604eb34cdd51166a2b2a60f808e349f2c82f1ef1a75767b2988341c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}