{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x1b1e4306e689394168016f0b573874635456352464f7e1dd8e2cc6d5e695e9e0",
    "signature": "0x93d4949d3069776bb6f9852a8daffe14be480b8b2527d21650f3ca1e13fe252241934002f33f7aab19445a9f39f2d07d42b9948996c86aa9a03a9057c1c572371b",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}