{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "511280302",
    "entityType": "User",
    "nonce": "0xf007347a71e69ea53e8a2eed2629f54864f16fcc22cccee41dbff9bfc72e825c",
    "signature": "0xea585fb0747ff99b48226597f85c22c85f6aa6c56cb668664b182ec3ffa805d027917df4e80938b65fd60a2c00128e5932b51f2e26950351b02fb8f97dcbacf61c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}