{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "661777867",
    "entityType": "User",
    "nonce": "0x3e5331fee93906f4d37e74e241c249067344a3821faf329882a49b0672dea6b6",
    "signature": "0x644f75cdae0a948fbca801f9d045b386f34027c9969ec6f572bf2358a875779f23ea24c5361591de07e848d00ee7363d49bdc023384274baa539a890d2fec9e21b",
    "signer": "0x9db84b5af18534d8Ee180c90E1377f813B5Ec313",
    "userId": "741417198"
  }
}