{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137691",
    "entityType": "User",
    "nonce": "0x83ede5072f4217aaf3dff53b5cb6192b04eed37039b91d39fa76fe342c620259",
    "signature": "0x18d0191d90d2bc768e0ef548dfb1a5cbbee26bb675ca8a2e32f108ad6f9be6fc67aef54125bd1b36f368de47625f15f4e9c377ec57a5c2cdb35ec86c29c28d391b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}