{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345951",
    "entityType": "User",
    "nonce": "0xc953865e63aa4d21772203c9b3864c992b9c82c943d752f2b6da9b4397b69df6",
    "signature": "0xcdec9ed9db6e12dba4ad04ee044a137cb723ad38445217014d37cb91d900d6b23fb7e1f55e035b8c622bbb75ce025c25b117f5d1a7475f4aea961a60430b126f1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}