{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78123",
    "entityType": "User",
    "nonce": "0x1f764a38809e7d55efda8bef3155e4c131e65478d47e89a18dac6c1415f0da50",
    "signature": "0x076a714a0ddcc9589d694b74b13090bd8dab9fae7ee0bad6b873094ebea598bf6348cf9a60f33fbcfeff972caa5f8c99167c4fe8eb38e3ba35bc9cb271aa53fa1b",
    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}