{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50397",
    "entityType": "User",
    "nonce": "0xc38cc40e625b75765c867305f45d91a269c0593c82a2b9bd2110ecbe957260ef",
    "signature": "0x443ad0b2eb5be10794a45cfdc84cdf937293f1228cb92db1d4bf74aa6ce957011eac0656fa0c034a6fb7fcefbe322a4a8cea6e1c424b96998ef16ad9a0abfbd21b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}