{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd36e0335ed25abbb8c0685701414fc0df55ae52423303ad5d12fac47aa413617",
    "signature": "0x6f52c7c0cb88513279d1673d868f1c9f275c7742a36d3a9d5a187aa05f38e31f4056c5b925eabe77ba85bfbc20691b4e42689e0d9b6eb92f5ad05adb7241ca261b",
    "signer": "0x40508cD93A56BbA120f0AFe8223C7367888Db11c",
    "userId": "408467611"
  }
}