{
  "manageEntity": {
    "action": "Save",
    "entityId": "2125849462",
    "entityType": "Track",
    "nonce": "0xe24f4d0a3c4911ef591fb9a2977150945e70e19d9caa20a857a5b95dcb568013",
    "signature": "0xb38a810f9d1f37502f6238e28e0c55a773af1c46377083875d017a422138fdca6fbd3124ad336927ddf84554e4f4e7fd64089c288417e84bcfcdb3dea644a1271b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}