{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571117272",
    "entityType": "User",
    "nonce": "0x2196ea464d57669f464401b13c3fb9277c3353e338cb6948d4ea38408d4ee572",
    "signature": "0xf9ea00171b8d805a44d0a7ca5c25a18012d0424c2312fffc721180ea629d87b57329bcb82415b576501af36f1b154f25d480487fae3ae1092aa223e83e8047fb1b",
    "signer": "0xa1F606584fdE30bB7d4BE2EbeC98A5F95E4559f4",
    "userId": "786922215"
  }
}