{
  "manageEntity": {
    "action": "Save",
    "entityId": "48084",
    "entityType": "Track",
    "nonce": "0xb0794126f933026004b283f5ac837add0c82ac4240a0854640bdece8ed02fb31",
    "signature": "0xd96d993ecaa3288aebd3ad25d3b485d25515de932d1e70b2e2fa444f3c060c675f77e9bf491cef1f4927a99cdec39a679d323fd6a6ad3206138681c887e596711b",
    "signer": "0x672e9a41a6b972AB2eD6BEB1D4a6e4F09dA4C9F5",
    "userId": "302680854"
  }
}