{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x729e6e53cac7963a726d8bd197a58a016e59abba4533ae2b4f815717341fdfb4",
    "signature": "0xdf4732baf483b23321687224cb3aa9a3de370cd9784d2dd6691530d9bc532bac1e75d68f2307a45e9faaca363cb6cf5b57994aa99321c927bbb01e9081cc1fd61b",
    "signer": "0xb18D2c0C8Aae7bA7C122784dDaB20C1f2876D3A3",
    "userId": "777619552"
  }
}