{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "909603442",
    "entityType": "User",
    "nonce": "0x8d4949a5b152afd9af5261423acc83ff14043eef7a2fd8f50811fd0ef64296f6",
    "signature": "0x7bfbe6bde58700bb05792ccc8c285851f1cf41f6f40501dfd6a56aaf0788e3215ff428e5386108c74b3d2219d5eda52c4bc7d2db9c77d6bc1995d1a7852f5ee01b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}