{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x90a3fdb45bdd804d9911bb680a76befa9411c8dbc3b301d085bad198b70875dd",
    "signature": "0x4678057a675cf6f93a91ffa62cfd5f03db277596caa2b0c348f0cff5abb060c66f62f817c8b5acf59b7ee363efd0bde95ccac7cd49fd8c843af9e2d7294a2fe01b",
    "signer": "0xE7a9E33DeC9Adf8605A88750C979e41f6fdAba53",
    "userId": "722055746"
  }
}