{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73438",
    "entityType": "User",
    "nonce": "0x0a5b260bddaf9a37a476660d922c4165b6cb4b04550d5b748220345a5a888a3f",
    "signature": "0x0a33ede4650caec1aa59e00410049bfe7e4eafa8d0e6991828002b8d0ce76b974cd5e9627985950b0bff280420491f14043252ddb0b2745dd8eea7496575c6321b",
    "signer": "0xD7Db519a2A03374B0548c02822bE88402aef1E5b",
    "userId": "715241773"
  }
}