{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x6cb594911da4c7be6f7a0622be29cbff12948be2f42cecccf0a76819a228c85d",
    "signature": "0x9af9b8f920fa0ddf06af3b83889f443c9b1e4693009d88230809d1d1333123f20019e6d92d1c20b3049eb6f773cf1f22e0d60e99c6f5e13aafe2ed782038d03b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}