{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681577",
    "entityType": "User",
    "nonce": "0xbcd500b778df0a52b2b554a82d9bfd32f49d93ce7ac40cf59bb32059f1027a9d",
    "signature": "0x9d5b7f3f535a2c59ad69af43de093953a548c7d10b5551b0e7d1de31fb29bb1931d1b76f1209554334286719d1a533f42ba6fe0def12d418b5cd66437b43318d1c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}