{
  "manageEntity": {
    "action": "Update",
    "entityId": "350957781",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieran6celfmjpkujrvigpueeilgfauqwz2voco6a2swiyemsxinm4hfq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1851424531}]}}}",
    "nonce": "0x80eca92f97b062ab97ee136601063e42b180b0277ed781c61420c5285096e8c7",
    "signature": "0x5926faf1b0b73cecdba0ed9cab3113c60a879bb39dee753d7ceae8b5876b7cb103bc229d4b5a60ca46e7c6fca626be87edbc1a4ab2720b436d5aea655076e09c1c",
    "signer": "0x9742BFcda3E998678A9f313149c705E80899d5c5",
    "userId": "350957781"
  }
}