{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xf99387790bab1ecbc61efcdb37743192a9d63683fdc5ab20f6336e0fc4608dd5",
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    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}