{
  "manageEntity": {
    "action": "Save",
    "entityId": "608364786",
    "entityType": "Track",
    "nonce": "0x6e758349ab1d8720c93fc077d5c6a37b983b3efc650a4bdc5ae76bcca8ea2856",
    "signature": "0x6cf83ce540bd78c50b42647842dfbe83364745cfc46188ff117fb866a847086e707e684967a9c8444599f671d0f03092979480b4fe99b27c9c41515d0dd86bff1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}