{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfcf0f3ac8199cf90c7f7ab1bd4713b73d2297665b5335629c10af7d999eb217d",
    "signature": "0x5c12861cd202a6de8b1da76b073b8d7d6363767d070eea24a9b2cb775dc6392553d1c59076226a651ea62912bf5d1c7c9df0ac986b21302ee10817b7269d8ee01c",
    "signer": "0xa8Ce1a8d6d0b662859275Ff782975bE537E57088",
    "userId": "253056701"
  }
}