{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "220780610",
    "entityType": "User",
    "nonce": "0x5f00dfca8c449a36174d1618550393280e1355b290b17970e41105cc9f85ea10",
    "signature": "0x7d0949e9743bdc887fefc6b6e65223c6adda37844a3f956e719b272b98ef3e924a6d26f63b12a074b9c90cdc5fc550d1b2f6f1082b6109c5e892610ed71396dd1b",
    "signer": "0xf9331645DEac91fCa6553E0Ed8B90be0088AF8da",
    "userId": "613221822"
  }
}