{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "945818227",
    "entityType": "User",
    "nonce": "0xc4952a34f11e205aa9f694e32d204b3944346f2e441bde7c2a0df6588abaf1b0",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}