{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "494523",
    "entityType": "User",
    "nonce": "0xc261a97e60f591bc9ca4dc6d9ec8a2cd3d3d862c70db64035261d4958ab7480d",
    "signature": "0x362a966c7a79f3c6c0ae6cd9ce365889591a8e742033499443956967b133a57a4b31e5248317414d5c808e4b47abcce837722f9c25072e343bc34921b7416eea1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}