{
  "manageEntity": {
    "action": "Save",
    "entityId": "107366",
    "entityType": "Track",
    "nonce": "0xf232c339f744808a7c72eb97122a528d169d5bc64553dae4271b6a9a7dac2036",
    "signature": "0xfc23a06cca782067b7755a44dd7f55af6ac79c595dd869581e7a8358f8e24d2b6fb07ff4869ba3922bff72fc1b0db03ce5114fc201677c9972259f49815b0fc31b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}