{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x33453208dfd63fc809200081f404cff29b29a35b54fea38b5f6dbc9db8b9fac5",
    "signature": "0x6d5d5a1b576c889ec699caf551cc0a78ced04832dc332152e8559458a47d05917eb5cfe0c74958bb8912ecfa681aa55c50dfd7b94b7313a315813b24c23cfd2c1c",
    "signer": "0x5Af531A9cDF9747df40f57531227d70F1bdD2ed7",
    "userId": "511108744"
  }
}