{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f9f97d42661c0180d6bb54f7413b3b92f7f964a6d19ed5375a8d306c7e4d4d4",
    "signature": "0x6d9f650df8bb82cae1740dbc73b5c160861069e9ede08a344ce573001e111192239a75a275cf30a41f6b50135989ddfb57af7ab9074df7377b98ae6c9b497d8a1b",
    "signer": "0xb961bb65930E5309eBaC1035852C6d723e2613d0",
    "userId": "323479662"
  }
}