{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xfc39f2728020cd80fa67edf7be0124063406e8b36df669c62b06c17965292faf",
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    "signer": "0xB829d797974E34CA4ABCd67CB5AFd0Eb84543A2d",
    "userId": "862165007"
  }
}