{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120545",
    "entityType": "User",
    "nonce": "0xab03eafadb46c5a862db37abc52cf874946adb640ed22ae93b9e99bd8d71b73f",
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    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}