{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398277387",
    "entityType": "User",
    "nonce": "0x36b11f2bf629f6bffa1ceadf9d92f38dbaedf189218f3a14631f38af938c53d4",
    "signature": "0x16c84d9fa6d113a808a151445afe526c573bfdbf3994cd80b087b6457b28e29c32fd0eb8cd1dde6ffd5b7adc5d2ef16b39558a8516ff2c21cb15b0bad1ec138c1b",
    "signer": "0x57952fe23FC9B280A92679ADf900A4eB42305B07",
    "userId": "58414846"
  }
}