{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x9a36bd3143e7e75ae6c24a48c24562a688c31b29bde7adfacc34fca7d9b393c1",
    "signature": "0x7d07f8e14906caa23d9406776ac53e0717d20ac0b2c44b0e2093abff6dd433236614c5c2b9a4161b5a6bcddd909af7b8b3b1b48bef4ea50a8d4d1d246079269b1b",
    "signer": "0x2aF04528b05939B9f7F5D99Fd67081660907b6b6",
    "userId": "3541"
  }
}