{
  "manageEntity": {
    "action": "Save",
    "entityId": "1726503909",
    "entityType": "Track",
    "nonce": "0xf16a5876edae1e361b919c85e4d65e857d5c194334b7d6c3e7a82c9eb00a2a46",
    "signature": "0xff65ab8e209d2c137722fbad5184bf9646b6986af4cc158480b1c92bcf18994259060feffeac18a9f492a049c9a5f4226007cfbfed376ff2b951e29967d708871b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}