{
  "manageEntity": {
    "action": "Update",
    "entityId": "964999596",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8ce43c89041032b8c87201ee76f795acf8535ab470f2e07ab016daa341e1f8c1",
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    "signer": "0xCDc6bb2FA1c24a93aCbB71C78AbE54Bda7327819",
    "userId": "964999596"
  }
}