{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "979252490",
    "entityType": "User",
    "nonce": "0xf16a1d247d2edbb5937a67dca0ef1c390754bda8f1f78b8f54201d886e0d0a25",
    "signature": "0xa32563eba5245f0cd1050ba8240eb5d213ddcd4c9f44637d05e278c3546532f972db8648602d92345b3e22b771f2d4df544b88a9bd54fc68da70f3f52138ee8d1c",
    "signer": "0x5B83E7748cF8e414B76B16e39d629AA8deDB4616",
    "userId": "604013128"
  }
}