{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x93078fcd09ea9377b08b0cfd6bd66a9d6036541601b99b246a34b6e7b21150f1",
    "signature": "0xeb5a2a706181507eaf6efa9f51f25a76703f96706dc1e265455309df56128bbb12eab4b5cd46ba63888a2180dc87fb6c7dfdf3a478b0df04ff71d8fbe8d0743c1c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}