{
  "manageEntity": {
    "action": "Update",
    "entityId": "728200922",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe3fe6d70cf0e445bafb096da6d612b40b6a687611df8cce781023c61f0a9b314",
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    "signer": "0xF542Fc138B42A0Bc04bCfb495d962f3313239465",
    "userId": "728200922"
  }
}