{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xef5ee44d125f3cc28e918dd0838c7f4deb741f01b6db03c7036db2a891ab1845",
    "signature": "0xe7be8dec9666b2d61caac0db2321ce20a1014378f1787914c2f93846bf73b33a1eb17494b5da1d722a47835f6c42f0729262fb7aebb1fbaae85370262ffc165d1c",
    "signer": "0xc84aBAe60A1202d7086b1438984487D43B475F92",
    "userId": "121101639"
  }
}