{
  "manageEntity": {
    "action": "Save",
    "entityId": "41852",
    "entityType": "Track",
    "nonce": "0xf493bdc2d6c80dd2dc35d8c34b4f4f4886137cd0138a49b63b3121bb44c90e5d",
    "signature": "0x90108a7d597eb46bc451db02106fb4935750e59a170411ad648764e0619b0cc149414f629f4c193a84080a2e0514c53d331c0cde17ebc9019db2696750747d7e1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}