{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "855728608",
    "entityType": "User",
    "nonce": "0xace499084f7c4df0b18f1574f06b200010ffb2d9dfff0ebdea1504edf8a4d7ca",
    "signature": "0x402f4bb0a45aecf228d43769b6ecf05de305ed1fcb6aa763a1f1dc9cf59e41ee0d869371af72f39520e7e0b78f4ec29f09facaf5287c11c0d26d1bd3bc5c10071b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}