{
  "manageEntity": {
    "action": "Save",
    "entityId": "1750056809",
    "entityType": "Track",
    "nonce": "0x05ac228fa3d20cba8412c0f235ad419b5e57bea8ad10a7d7962f58dceeb89b4b",
    "signature": "0xcceb1e09d78e46eb29ddc86870577aa37c43f347791796a36765a3a6791e78944fac47de13931bdd31c9669f3e4dbefc7c47c20327aba749d44dd5dcaac954f61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}