{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "512214950",
    "entityType": "User",
    "nonce": "0x3d6a26c26844167e0c60ba2e31b61070ab82fdeebf8b50914a21d46fb716a97d",
    "signature": "0x249e5d04632f8275a029f886108ce46277eeea39691e5cf1c40cbeabe3a78d446b4bb3bf5b097bf06c2c467af1db386419a13c7c206aec7fd23bf5f0a9a225ed1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}