{
  "manageEntity": {
    "action": "Update",
    "entityId": "177221016",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8568bca217e99e5e5a9370f91dae3299b5503ecbc96e3a35f5b8a7ca7b03b174",
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    "signer": "0x480ee41798A8d5c35a34d2B7258db7CD61d6Ec54",
    "userId": "177221016"
  }
}