{
  "manageEntity": {
    "action": "Update",
    "entityId": "534515916",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xba2a63cc6aa0eaa55195db367bca6ba45301bb40f071e835ea60ce61e9b55595",
    "signature": "0x71cb5f01bf5f494886a9df2c8faf5f5d3ddd0356389ce2d97e09bd99a03976ad5227801ecb7d83aaf6d44de5065df489456324adc7b47819768642201c6b695c1c",
    "signer": "0x3CDE47c2B951E827ee57ed78A89fBCC588877e9d",
    "userId": "534515916"
  }
}