{
  "manageEntity": {
    "action": "Save",
    "entityId": "1346706198",
    "entityType": "Track",
    "nonce": "0x74397104ac485281775e10ddeb75dc41d8238fdac7b5053fb453fa48ef2ca48d",
    "signature": "0xb0599daa7ebf8b92ceacacfda1a88ab8b5fb3ac7fcf16f1a363ae60558e2aa10671bd30454190ee5d09a54a9fe795ddb225b673d7c5e9641aabd20674566357e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}