{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xe7cbec2c9927d49c32b9372c5a77b39072e4363838e2cfd205f095b814859a0e",
    "signature": "0x722feb941823eb5fd15c6c799d8f5c29dc49f4ca9839d8238f87fdbe79ea432d0748f6563407f8da827ad9dd665ec4f907c694db6f5957c6ea4e28cf59bf95071c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}