{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcaadbd547ac5d8d269c803946765d0ddc948fbcc27d7d14c993077097103e3a8",
    "signature": "0xd0d5f1423308fb42a08acad23c08e4b5be9d4cac71ad4b9a170c53ddf348bb6c1e727e1d2321c39918723c04c6853bfa1cbfaefb6183d6ff84e34615aaa91d441b",
    "signer": "0x26Fe8f7CB08633fD2a530F1E5d905BF21cD7C6C6",
    "userId": "50234139"
  }
}