{
  "manageEntity": {
    "action": "Update",
    "entityId": "990308344",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera4wr5idnialp3aryamvohotsniqhbd6v2cmczavv6lpbwxightzeq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":78544},{\"type\":\"playlist\",\"playlist_id\":114524},{\"type\":\"playlist\",\"playlist_id\":89444611},{\"type\":\"playlist\",\"playlist_id\":1409111351}]}}}",
    "nonce": "0x53abdd76a68a594aed3da85de1b67b5fedeeef11da5ca44c0b226372660e6c34",
    "signature": "0x21c3a5b49be31ba680615b85990bd26a5d9a0ac8a184b1561be5e8ac15dbbda752d79ba7717d2a4b1f024510cceba88e627c34990321e4329641d88dc804f93c1c",
    "signer": "0xb23FFd6D016E95A4022Fbe25C4a1179AF8492788",
    "userId": "990308344"
  }
}