{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "654087878",
    "entityType": "User",
    "nonce": "0xfcf7f0d0cbc6ba28d136a71709329f60121282b694024e981d9247e2e1cf55cb",
    "signature": "0x71ad68fabcea715f638e2a76c99d2952670a4d84ffd65cff5cad303862c6b1e367e39087c0937b2508713727cc82076137ae00fa5339bee014dbdf16069191001b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}