{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16742",
    "entityType": "User",
    "nonce": "0xd790f5a33977354cf44d8668577aa7f7d47fc7bae8b3085b597ac20517811120",
    "signature": "0x0558591394410370541688a3fb1cf155d32e8def88bf61d532ebb03021dd6c4f7ab70b024242d1c22ca58c6e81ec8b50d7b75ee18bbefcf5ef7282b3707b04aa1b",
    "signer": "0xAb988e2C48a71289c0c9a58a2Ce3b69B8531d518",
    "userId": "532463224"
  }
}