{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "364447",
    "entityType": "User",
    "nonce": "0xe16335416bff0ac83d077cbce109a7ad52f38a4d2c600f2b362fe037bd50a4b2",
    "signature": "0x9b989e3f0ee75d7b5fe7b4126efe7a684993c271d240811823a330fb3166b5d856ca0de49ed4b66ebbdcdeb478f069156296a8eb6aa34a4cc0abc0e205f507281c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}