{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142718",
    "entityType": "User",
    "nonce": "0xa0621f099918296b25665ec2a8fc8e25abdc38c7f7cc6d81a4186645b4913b6a",
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    "signer": "0xBbf8F4053B145E8eC905ffb20f5b4e80B183D48B",
    "userId": "960158487"
  }
}