{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768479471",
    "entityType": "User",
    "nonce": "0xed8b5b23c62df5f36f0157fdc259c038177c0d8556e493473f98ce77babe8271",
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    "signer": "0xB57F94Ef9a26d73E8b35D3f37FccD18BcC7eeE00",
    "userId": "850416615"
  }
}