{
  "manageEntity": {
    "action": "Save",
    "entityId": "746036",
    "entityType": "Track",
    "nonce": "0xcca12fcfa47dff9ab47ba837ffc159978364e2a96101d453bcde5c92f2da2c24",
    "signature": "0xe055e6f1684d8efafeeb9822c12b168e0ab825f6a38d03ffd20023a2860f288c5b25606c43ca400cd65fbdb1e6b3531c0efa452ea2abbb0242fe6ad782ca24fa1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}