{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0xff3509096c9a97854a63c0a584686c2836148a8925196a95c2104b7e130a6f81",
    "signature": "0xba19aaa3115374b1b27adb6c75509ce5c6c5c6b2ffbc48d9224b24b5b9a2030a694aec73e608bf833ca95113a179e932857f17ef6dc1317847c6f257f01346561c",
    "signer": "0x73Fa2a31B1ddF03cd963c53C67ACFd9Bd27E7d2A",
    "userId": "970203605"
  }
}