{
  "manageEntity": {
    "action": "Save",
    "entityId": "1813920576",
    "entityType": "Track",
    "nonce": "1791080013042402482",
    "signature": "0xe05eb960e19c25ca4eb03ac618e36471e86fa676a6216716c9c372aad9489b207f72f9265bfc6b8bd19743f0e23f0db597f030ecfcd2fb376d47ffe2e151b50d1c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}