{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1951469c07442f92a7e25ea03566560114bc8d767d58d88a1536dc63388119f6",
    "signature": "0xa8f7c217425eb54bd10da2cde77a56bb5f78680dc5c148fd956d05bc0ce404c9326c81b629277588f7f3871fef09e19fea44e6740fe150aef1f219567199840a1b",
    "signer": "0x649496D4Fad3F08291110883C2bB9dcd763CCcc2",
    "userId": "359303546"
  }
}