{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "445403",
    "entityType": "User",
    "nonce": "0xc6bdde2381070c7adab88486c0482b9547f27a83d064e1ed72743e94799a8d65",
    "signature": "0xe61eab8627114f02963f8fcc8a04a6aeb806828701cbbc45a7e26bb82b10901a5aa91c2889b7cad4196f5a0317f0bc18c833dafccfffb7c5b85e288cf4bc3b731b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}