{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x083ba824526854aa43476ddb400005ac0eedf61d957415f3869f25db140411e3",
    "signature": "0x4a12433b6e86357472dba061e9e3f5a25153c89caf5a84729fb3202341177bec2bf16a05be60d53d215a7eeb5a506fc612e8cc2083eebe56d382d7e00c8856641b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}