{
  "manageEntity": {
    "action": "Save",
    "entityId": "22351757",
    "entityType": "Track",
    "nonce": "0x37d5a9d4a819790320ee6353f5aceac2ed8a05c6daacabdeb4cabdf334f7bfde",
    "signature": "0xa7a304ce2061da2eddc64febc619b281fdfea1422fdc95be32a68c917cf96c5716fde66d719593f33c336ba0f298cb26674b576c064d450702807de492492e9c1b",
    "signer": "0x8FF85C5AA450a88f13FbD5170e24E2a3eFF32518",
    "userId": "311829956"
  }
}