{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "669387663",
    "entityType": "User",
    "nonce": "0xd31b5373f330bd954efa1861d534d7af162189c50f4f1d76abe2b638d47000dc",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
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}