{
  "manageEntity": {
    "action": "Subscribe",
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    "entityType": "User",
    "nonce": "0xc67b3af1b7f7115532073d080518c1d3fd5c4cc5ec6b56bd099a5423678bdb68",
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    "signer": "0xC1896EAF7ae2431A08647A163291b5a8A0cd2a6C",
    "userId": "185209372"
  }
}