{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x23e3e799e4d7111c7146ea0f73c5759d64003b101edea1652d8a6cb3e51b7ba7",
    "signature": "0x8e696860e9831f556fa67dcc55ff0f44dfc42400de4612e561de22a5561aace73395b9bfff6bacb6a2f6df071864cae0047ced33d44e0141f4386bc948c9602f1b",
    "signer": "0xA24e4d4bc903e27F12f8Daa482d123f8f03D956b",
    "userId": "643397556"
  }
}