{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x3c0664625101abfd05be33e105e2bed063e78b27c8ce50c2289b3cc02e99d568",
    "signature": "0xf68094725162783bf78c0a11be0a3d4841caedc40ff3d88fc0a8a4df0c010f3a0c328d9635323d7d26b09659b48cfbb6603056448a9c7b098415688acf5c3e451c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}