{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3020a14040d1821c96b49eddc61ed1aec403c718db7bb6c731a7d852fd70f179",
    "signature": "0xd123c5daef90ed099c67c798d1543d9cdbc15f0118168e1eff8fc981938126e5072a45f0e6b87bf65bf43364215600fa6115fd665614be571cf0a84016a9dcd71c",
    "signer": "0xF8CE7aFa6c75Cc913a4a6FD983a9282107A368ae",
    "userId": "625220598"
  }
}