{
  "manageEntity": {
    "action": "Save",
    "entityId": "85809",
    "entityType": "Track",
    "nonce": "0x136692aea13d42ef2ac36f0c0a341690b1955c08c696fe2559a3f889fa1d87aa",
    "signature": "0xb4d5a709349464f725fc4c5ffbf1c2aa030cc6bc7b3760e80cb2e0ce47d6f214552c0c5d411c60c0c12cf4397c41830dee8feaf5be5bcb03f20b568e398e2e921b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}