{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcfd513594d7415810d33e9255f00d9cd0b1fcddf708134bfc6d7b4be9066242d",
    "signature": "0xd9a8fd3895c05ae87dd7eadd90fea90ad1b5dad634e1927e02f2cf3764438d502e511ccda8e6c19274c5a1a2de1fedbb16fc8717c19b8e68f1fac597601111051b",
    "signer": "0x0Cb3B04de82E75E015f84e94d1DE33eA1473504b",
    "userId": "100090397"
  }
}