{
  "manageEntity": {
    "action": "Save",
    "entityId": "62830896",
    "entityType": "Track",
    "nonce": "0x8e3cba28a8a8eddcbac1cc210eafdaebc7e7521b55a688308c248df36b724072",
    "signature": "0x809e9e3ab1223515d5c975ae941bff2e9b3fc6203bba4749eabcb13d774027d26f14036b37e033a5c2f9917610136f8b8e7c80712d9ecab46977a4b0ab5b9c1f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}