{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57620791ea752d4908774d85a36f938f0aefc96cdda111c3d3daf5dcf62d9e04",
    "signature": "0x0a21b21356edc8a2fb6a171068dfc7dd16928832bb64e916cf3a58094c8823d401ea8859f7f588e6b54aebe6b63c79d11a4b090b29305c82438206f240115d9f1c",
    "signer": "0x9c320C2f7A61EF6f1f62d2eB1a8D2c30dBc29c24",
    "userId": "543327273"
  }
}