{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x4709670d4e608c749e8f3bcaf1a43e6d0efb88fbb694de30db46f50406d2b3cc",
    "signature": "0x2880950ccb2b5e838ef02da1b94b328f248aacc9687f4fc43d29cdfb774bb80937f2f38fa2526aa759349c412e7f33df53e6718223007c4118ba20a8ef1a341c1b",
    "signer": "0x7c5233DE7A8aD918D090BD36cC8C0e6273814D60",
    "userId": "559710456"
  }
}