{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xd5e69b78b1cfbf59f035823b7919cb6220b47c870f38f2a8cd075cd692a96e01",
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    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}