{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987917854",
    "entityType": "User",
    "nonce": "0xc8c6bc8e56678ae7966ce73b787069ad2cee9b917be421a32441d7bd3680b6e4",
    "signature": "0x42125cc6290b1a70a2249f510d130f0e3547e8010442a27e94d6310f09ac34382a09e8f092d0ef3610d023b134b2cfc8730489957c7720f35024d00fcd58e9ed1b",
    "signer": "0x80a0405FB3B9d86d11d9837558C400BE65BE42a4",
    "userId": "464100900"
  }
}