{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xc692164f3c21a87fd507a179ca1cf0faf9ceb546fb0c2e491f160d44d4e3db75",
    "signature": "0x3a3b43bdcd8ce2b4ff915dd701cf68c229b4d8d5c6f3249ea218a6cb1d3e614e53da8e45d27bae3abbae9cd95da63475ed9b14eae41e5c3b907cba26bd19b0791b",
    "signer": "0xE35DcC5C816D790A9f730B4696F43Caf64d5d1e6",
    "userId": "603916020"
  }
}