{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d87014b82ddd4eb71bc998957d59f422c870e9d0d18a898662ec520cbc47e83",
    "signature": "0xfc2bb4b09c31741cacb721774d32dc74633c97a1806da04003568f5aa84f9a6727bec1afa108c350185044058cf73b35933009f12ecaa28539a05f6e7de83c171b",
    "signer": "0x771Ea061Fa0D229A49cd7b74921CA6D304879482",
    "userId": "115980928"
  }
}