{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1559395",
    "entityType": "User",
    "nonce": "0xe3d0fbcc72a2f677d3955c294acf43148bcc90710312391ca089dce3a5a38a6c",
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    "signer": "0xB8bF557DC997cD9e10AF5CcDddf0D851f201Cd90",
    "userId": "806523887"
  }
}