{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x4195f0ef202b162303bda8cf42882d827d8a39a9686a29f37d039b99a08b7f54",
    "signature": "0x12840387114d55e1dacba9651baf0a5cec460e68c3f1ba604c4a8ea9efa1b7504dc1ad672251f8a676e785b67c221fc5313dda49c17c17f2ec62bb303cba17371b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}