{
  "manageEntity": {
    "action": "Subscribe",
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    "entityType": "User",
    "nonce": "0xfdc844d8c5c9414b7ba35aa6a28d0c8ea5ecc9d2100f1977bdce11ed6c474867",
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    "signer": "0xC1896EAF7ae2431A08647A163291b5a8A0cd2a6C",
    "userId": "185209372"
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}