{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54937",
    "entityType": "User",
    "nonce": "0xcdb9d7122e88d3c8c161a49641677f61236e4828abbf1bc8f4bc6c33dc50ace4",
    "signature": "0xe80121fc25d69761c13d46e56f988a2ef843c71fdf17726a77857aa13ae39a355c702d0eda1293c6120b9640865c6cc5035e704828b4298afb0feb519ca42f651c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}