{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306603",
    "entityType": "User",
    "nonce": "0xc6b34340e51545bfcd4807216b0c9a3cf3155a79fa03c2c137e32f00b130c3b8",
    "signature": "0xe6c05b5b555f2f179cd523f0a57e3c4454adb0bbf53b237a915e109754129c5b684e07d099dbd11b915265d87bae1e62239effba5d6e3c2af27197fd9c8e2e571c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}