{
  "manageEntity": {
    "action": "Update",
    "entityId": "545537105",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierabqxax3fp5mhvw6fwtt2i2wx4qdrsj4msdl5ufum3g2bcqd6ci3xq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1759831332},{\"type\":\"playlist\",\"playlist_id\":802054229}]}}}",
    "nonce": "0x0a360eb0c934f435b1ca25dc3e3c43e8f7d281f96e1563f89534a23fa7b75c34",
    "signature": "0xeac9fe5150dfdcc974fd447b75ba4cad6ee01e4b515480cd423544ca2ae7d4a32c81d78a2b1f794baa7fa686aa3f2469b210319d990dc1f692b5d87761ef4b4c1b",
    "signer": "0xB4a54F9B2a7959bD50C623E17c29991fa049790a",
    "userId": "545537105"
  }
}