{
  "manageEntity": {
    "action": "Subscribe",
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    "entityType": "User",
    "nonce": "0x2f8111104db1efa0f5c3caeb3608559d88b77753c38bdacb2ee3e2fc875beaf3",
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    "signer": "0xB63c8A7B935b55823f383e8f19B6207FB6b31168",
    "userId": "330374208"
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}