{
  "manageEntity": {
    "action": "Save",
    "entityId": "2127434622",
    "entityType": "Track",
    "nonce": "0x7e71b0bf78d1fed2682dde7f3d7b2418fec27476bbafd314669c06e4ed75d2d0",
    "signature": "0xc714347cbb62dc179347741f4668887175041baef9a4802a076f5998d641e55e7530cddd327ac8eb80dbaf1ca3a379afe51671c9d23cc8abe3a08af9cdd73c341b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}