{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x64db81d6c6f90082109325b03706a7b7ae596590e7abad9a7993d800f224a195",
    "signature": "0xc36ff5674a8c04a02ca37ab2bbbbe7d97c29b3b15aa284a35fa8f4627d73692b2e9a5e565ac9afc3ba4291d7d5ee66d786090d5b4d77de8102d21ddbf920ebda1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}