{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5ae11d6726109be2631983e4f57d8beab3c2ac15f055a6ff39a6285cb3abd44f",
    "signature": "0x1e85ee9da8844d04ef478afd92117b7d214ba830e7947e8d099956976a508f7d1a159fed367d9190950f47ccfc69ee9da54f90927ce5c4365c3ece9a4017e1bd1b",
    "signer": "0xcccABc73DB73A41D08578843a90484a32042B17A",
    "userId": "493021415"
  }
}