{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114576482",
    "entityType": "Track",
    "nonce": "0x7ff060ea912f4aa05c6370d1bdc3b1f24880c16b6a55f338afcf1fceacc8492d",
    "signature": "0x798bf42117871da8ffa09758d73c34643a3dc3b274f1768380767687a88e8c6556c7e04456ea725682d2b32495269252ee3609cfc7442691d87b849eda2d9cc11c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}