{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7a43dbb6dac8b233ffd994b4bbb9bcfaa43e1fd92c07d6c84b03cf6d503985d7",
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    "signer": "0xBb8F007563284c87a7b99aCb4c7450452dc40f8C",
    "userId": "410704075"
  }
}