{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcafd3525346f86ac71c647222f36b027a46360eaf35fa82bcc0abfa4ed383cdd",
    "signature": "0x6ea102a51f6c2017ded6f21b5b8ba1f340b23ad853f634fdcad95ca6b6b1c2f67f32f9494766af757ba3d3acbafacc3e2c94bdc4d818830751b4810c9f2ac5941b",
    "signer": "0xfB57E8D8fA93066C2736cbef146E4E861DED074f",
    "userId": "838874462"
  }
}