{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6aa6edda6b51e5de34801fdbc83a7f889108fc60ff7c56d15ae89a3db07a68e1",
    "signature": "0x8547b8ec155d1f31b391dcabce2b8c52240949bac01871b92f5eade0e162f53d626974b47bb2b6746bc2860b4ce2ab6201c4f08ff118d98f07f09450d26445901c",
    "signer": "0xA39B4746f152A491644f4cc9E8b7658D756cE60E",
    "userId": "750738320"
  }
}