{
  "manageEntity": {
    "action": "Update",
    "entityId": "1474453",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierairrq2o7nwyqvcmpdi5j56c43smadmdiqndznb4ts75bb4dmwx7na\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":2128641561},{\"type\":\"playlist\",\"playlist_id\":630530363},{\"type\":\"playlist\",\"playlist_id\":2013618868},{\"type\":\"playlist\",\"playlist_id\":1553972801}]}}}",
    "nonce": "0x1b4595b51cae353f1e372a4d872152d9fa23f04c8d81c06b61177e9396397852",
    "signature": "0x9f5ec71c3342b76959d90d55fa17b7cfa67cd9cbd9eda9cfb7fe8ee8ddddb5c51b9a3da41dd95192ffe98e8572dde948d633f7b34d0ac0a0b0abe90eba1404d41b",
    "signer": "0xeDae8fbdB2a56d77Fc35eaC72D7c338eba53388b",
    "userId": "1474453"
  }
}