{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990836999",
    "entityType": "User",
    "nonce": "0xc22b08edc21443bfd95885851f5f527dd90b9ad64fcc17ec2bc316c58d99ef1d",
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    "signer": "0x5B83E7748cF8e414B76B16e39d629AA8deDB4616",
    "userId": "604013128"
  }
}