{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "816709547",
    "entityType": "User",
    "nonce": "0xeb3ae0a6b378f8baf39d9ddaef358d0c46657bf27d56d5552feeac26cc8a90a9",
    "signature": "0x801d99a5c9805ad5d9ee8ade29208930f63715913e53413a2073410a862f369e146f265fd9be56bb584ff974456df4c7da39482396f61e2ffc7e502c1c8c372e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}