{
  "manageEntity": {
    "action": "Update",
    "entityId": "617767559",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraudqnu4cl2lom2nuq3frbbig5l72xa62bhskbgpldjvrggln6unga\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1376625089},{\"type\":\"playlist\",\"playlist_id\":2016251683},{\"type\":\"playlist\",\"playlist_id\":791375254}]}}}",
    "nonce": "0x8cc6f19935a26c806adfe51eedbb86501d43aca4b20bea854aab056f7aa0a21d",
    "signature": "0x8def1b66b46b379c4816b30340e6b7ae0d01f12963be3b135634ab2f5a6fcc911265e7d74fa0015f644cc815732033220e84d43580d5ebe6d10c85277db9c5231c",
    "signer": "0xD1bE3a5285936339B5F1dfddA1091cD6c98fDbD6",
    "userId": "617767559"
  }
}