{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x77081409946f0446872d8f3547032fb548546fe74fa9dd23b1fa1f21bf00d4b8",
    "signature": "0x540138a3f6f2f16e1327a606feae449eb82d9de037528a50997cdf6ea68468aa28518184b165a13f78a51f6a7b25f43a56e8f6430ddb4902173c8fd6cc4a77d51b",
    "signer": "0xF0374bD89da86B3f1da227b1143d70b771354Bc7",
    "userId": "223267353"
  }
}