{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57d45cb17d339fae6df575a503430bf52e2497e44c85f87e04589fb5339095a1",
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    "signer": "0xC110fc8C7e1C3F75F800c1FF484A8F52E1a6f5f1",
    "userId": "238140916"
  }
}