{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x92b0d7e55408de4cac8a9236e5f96d60970a1807f0e3eaa47bdc814034e5ef1b",
    "signature": "0x823c59d90feee4eeddc45b5e0f4a4586eb235a9e1b1bc99145aaf0098bba1cc854a9af78fb81bed9fdfb5ab7e7e9c6fd1835a1db83bb364239367415f73b55561c",
    "signer": "0xc75b2F94526730197DdFe44FADaEd9AbA490032A",
    "userId": "229850481"
  }
}