{
  "manageEntity": {
    "action": "Save",
    "entityId": "1122424",
    "entityType": "Track",
    "nonce": "0xbe37893c0ad8ce1f8713897da1eac336d22755465dedcfc77cf46e271911ad10",
    "signature": "0x7bc04fe32ff2e15823741f7a33091258972c9b0e27edb9a8b3e7d57670792961663c065b9a76717d436bd8cd7a7580ece7a59067572b957cce9a2c0ee825193c1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}