{
  "manageEntity": {
    "action": "Save",
    "entityId": "1281310135",
    "entityType": "Track",
    "nonce": "0x2c23f22c188af0deb871c1bb0e4a591d10c2ec6d030d3126d3d52f105d10cb12",
    "signature": "0xba0f3e8103aca83c53a2f05733997a80e98c44537f1b08a13cc346964927186b4b9f40ef029cff971bc170f0eee2bcdb85dd123192313482167a120cce3e2cd41b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}