{
  "manageEntity": {
    "action": "Save",
    "entityId": "4817791",
    "entityType": "Track",
    "nonce": "0xf444d4dfbf34e37b46174b293d1fe93ddcd8e044cc1d12c3db85afe97024fe56",
    "signature": "0x2803c090ec5673f4bab137522406772a9988ed4faabd25bfec3618654f9e8ea45e9874b6e88b956be8f3eaf074608e981fc1a39e93fddaa415fc61189216d62c1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}