{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "866199149",
    "entityType": "User",
    "nonce": "0x9a3f45293ef2790e585628159f30fc26e4e2a8c72112961f0298242ac5da31aa",
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    "signer": "0xd9e78908f0BeE3B3Ba494c4830051e688d199d3d",
    "userId": "379263871"
  }
}