{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0x64294bb758fd6a94a46ce051e167e469fd51cd68025655a99ae762cf73e163cb",
    "signature": "0x730d332f09428530585ef719d019cfecdd1153495afd3240386da785fdffc83a0aa35793d857ba148009f75724c958e42f92d8dace8173bd9db194b9b040b1431c",
    "signer": "0x29aF37341ECc995FDD7C5fd1757A5a695244AADC",
    "userId": "113302290"
  }
}