{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9192856c3ea8c913be40591ea8a183c496bd80ed97015e4b7d7eb6fa6ccae77c",
    "signature": "0xc2e491342c97764c6e910bedc22660bce4753153f8c61d74e81c7dff0d30325932d1cc9db4d7407ae9b5f485ad4a29ebb0468329ce37cc59901c8499d15fbcfd1b",
    "signer": "0x0de69a50505F6FD476Ce68575aEbDec1b03F396F",
    "userId": "953141032"
  }
}