{
  "manageEntity": {
    "action": "Update",
    "entityId": "981231831",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc59aa6f76c2fe6a8a3ae8f9a08765b5dc10cc696a151c0b5af6370fc2cc9d9cc",
    "signature": "0xfdf1f186752d2de76e38540ea64d736fed40b8eb78d404fd4f9af849ab17b28a5e7d406eee1e963c21030446389d2450cdb265041e25d2ca4bcbaf0666edd7831b",
    "signer": "0x07c52469beCDB96497D6BC2F5429133d3E432115",
    "userId": "981231831"
  }
}