{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x42abff45558a89bd0178f44710505c1acfe3bb7ee836ec759c727b4de87f0915",
    "signature": "0x753698ffd654b9296ac4ca0b19f1c23c147cef119870d6b013c065ebfbc9a2893db5c8d693c5b8866cf01e28517a8ce816ac1fcb99d89820b63513e630b781b41b",
    "signer": "0x0188202b70D048C3907E82172604021738E6C899",
    "userId": "37488618"
  }
}