{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304316",
    "entityType": "User",
    "nonce": "0xc63c11bbbfc8f623db1258a5693482d902c936fd4c43063052b7f63cfbbb1755",
    "signature": "0x89667037af3e16423b294cf9ba1e308cd154e621812f39c06e3c5ee7488f01536a792a3b5cc4bf0d4bd3a11252534f956026af134fd4c91719ae2788a5a425c81c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}