{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1c69fef8dcd333e2c2a45e3e1f734d3594d822dc7ab0df84b003c0910ce4b50f",
    "signature": "0x88aec2ab55ff95053481f9a4c609ec20f9e8efeb2c44444affdf1e062753823e794609451aeaa58b6a482f9ca918c3b6dcede1c296804a7b5b6355587edfe2aa1c",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}