{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x4bb83727b2e26c6e68700b5373162cc4823bd5abe1b9ab9d708cb450d19e320c",
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    "signer": "0x27D63a4a6013A541f367C3A37Ec9990943De0A68",
    "userId": "66005"
  }
}