{
  "manageEntity": {
    "action": "Save",
    "entityId": "2020305477",
    "entityType": "Track",
    "nonce": "0xf6d68827b98fdf1f7285d07bb2046134dca30fa25b016bb8ad12a56d47309966",
    "signature": "0xf6bd01d64e832e1f9fe656b6aae9e5d60c2f81837199f535eaba90373553b9c46892f9e2192472a9198190dd2761ffc0df8c0005793aece34be6e5a66c702e451c",
    "signer": "0x4086Dda2D91F77cd46De0859a4de37F888508faA",
    "userId": "568518925"
  }
}