{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xd34c058522829445e5a15086ec84efdadcd83f44ac4f8e43f7e7e51eaa00c91e",
    "signature": "0x767c3668eb9e08cba456a38415c323fd33129d4a51de0abe00ad93053799742d305091be9e6e84c90a3ea3bf6efcddfb68f07d49bcf7be97db5ee125c98474481b",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}