{
  "manageEntity": {
    "action": "Save",
    "entityId": "2104425799",
    "entityType": "Track",
    "nonce": "0x11e094a6065e5fd27ac0f3ac63ee12e72ffd3a8aa394160bfe3938efd40d0b60",
    "signature": "0x991a45d50138e9cd493b6e8cef82817aab0d9518613e2212fa670b98695551d122b48f2dcddf4a6ff613d4f375410ebd064cec54c981470fae8ce1c05c7974d41c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}