{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "300651296",
    "entityType": "User",
    "nonce": "0x83b1c6d59962ff4b38577917fb12e2dd91b89aa665c6c56cbb584a2834c038ed",
    "signature": "0xfc19c336b355955a3b82697a38d4e0957c440c06ed0609b1ace592190dea4c8845466bf67357ed9492279aab0f789639a007845c43551c1a860f7228cdbb1a5a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}