{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x59d6759d2cb35a0e27a7997c41c96d4f55b43bd1161e540a1dc08078015fc9d3",
    "signature": "0x72b2812454b8783996ea25659e0cf915582443200474241bbde9192bb659cf4307444b335c9a12a593255bf0d74d92028695deef8d4e6e17f7e4508c445ab6e01c",
    "signer": "0x2EF4cc233Fa6017F37872f5513d6d080bCf9c8fc",
    "userId": "640929433"
  }
}