{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa7f1580918eca842777a6c3abb595dcac6d84c32ee7333eb37b83e6088e9d79d",
    "signature": "0x21b191db192558c6dc990fb5c3abbae1ea4b65fe93123e2930d1fba4deb9fe651e8b91baa8e284b7089b3925bb16c4c30fd750dd570f8ed49f392128e62e41d51b",
    "signer": "0xE0716c4935353C129B2E965Dbffa5Be1F5dAEAa9",
    "userId": "680102267"
  }
}