{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x23cf631f269e279d145c2609a5701fa7817e66e9abfb79ecc4e23c3940595bdd",
    "signature": "0xe5d9bd15c1e398d59f784cfae55507a137352341dcf99f86e35ec4984beda097428dd63db876b7cd11e97b2d185923ae8f02d67ca0562e4475a500c3e8d2a1e31b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}