{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0xf199ab945fb1f0501570de14e87e360d34f3e62a9de90e038ce52acf38672182",
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    "signer": "0xE92B30ef20734795CF0471Ecf7e3725c78D905B4",
    "userId": "460692842"
  }
}