{
  "manageEntity": {
    "action": "Update",
    "entityId": "664400706",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x890771dc694840163b65223133860b678c69d2f18e7c33a5a1928a83ff402308",
    "signature": "0xa2cbbabd1cec712b75e817b16aa1c61455139429450e4f3ace5f76f03593e8164a6977dcd2253b96131fd0c4ba64d2f359395fa57bcbcd11d99e20d752a9c7811c",
    "signer": "0x3e6173ed837ACf94Bd7FC84ef67D28F63beb92cC",
    "userId": "664400706"
  }
}