{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342017819",
    "entityType": "User",
    "nonce": "0xdc445c2385457945640706c6b003d4541cc616f65d4f05bfb644d2d6c2c381e9",
    "signature": "0xb2729746cc240e0d4d9ce4d2ff9aa7f5186bbd5801ee3234ab11bdb4059e76791bd00b12a269ae1bcfa3a6a5900bdb50e741467b6f3f8460fe1caadce3e21e5f1c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}