{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "903958768",
    "entityType": "User",
    "nonce": "0x50b377c45d08d9b3c21f72becadad273408c0d66a7b931c1dcada98801cf999e",
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    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}