{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0x8f49443defa9203fe67547049450e0ea4f801030d2a7610d419742b6f555bd92",
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    "signer": "0xBb2caCc6cEB2E54202DC5061152e55e2E7e6ed85",
    "userId": "1855643"
  }
}