{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x49b5f6c505399d2fbbbb833dc399153c34ad81c11060b151ec428d1a0f2b49c9",
    "signature": "0xcacf4a0337a347379e15b815d1d0768b1b7001d0abfe35d02eb1c189d2ff53313e49168aef13a013b742f2b16169a7bc6cd64067d9053890fb82783e185114f21c",
    "signer": "0xCA44d399A62C24B17849BA2f7295AdB31B635B5c",
    "userId": "313825445"
  }
}