{
  "manageEntity": {
    "action": "Save",
    "entityId": "1756065328",
    "entityType": "Track",
    "nonce": "0x35b166f66abd4b52ba987b9a785911226497194ee03ae00e9c6bc182cc42d408",
    "signature": "0x1112f993aec1bdd9d0c93b8bb9e17cdceabba6c863b9db29c7838f693b49ed062ad5a6703837580ecb512122ade9ec66dc1d9a30e4506d5a888510d5a982cc551c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}