{
  "manageEntity": {
    "action": "Subscribe",
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    "entityType": "User",
    "nonce": "0x6ad4733dd061407ee9a762d9cdeb8f6fdde42c8fdc7cecb754cbcbda3b574917",
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    "signer": "0xB7004cbc66E36054FD494B2ce010ED2E0456Ba73",
    "userId": "359024620"
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}