{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137817",
    "entityType": "User",
    "nonce": "0xa943a57f23826ad3541849e014a1d754b5ff7b8ca84582ee65ef601862b7e1d1",
    "signature": "0x2ca0ab7e7c6a31ec8f896a784b6110f408020145cc22f1849105b21238b532ce5affc70c07194d08eb191ae255ff44708d5e7d9b262ceeb7c7569f5e9e1fd3d91b",
    "signer": "0xCaE1ee7dc4DB493ceab857fd89C09fA305C4c5d4",
    "userId": "648743045"
  }
}