{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xc67217b459c73d79e183c68bd632ef175e7068a6c4874077577abd5f592a93d1",
    "signature": "0x6d1bca75c5b201a60c4fd3fac8726d396fd10fea5a07908593443b8953bd6c861755fb215b2225363a11fbbb933279695837dda6e7f360e67e27a2e0cfa005971c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}