{
  "manageEntity": {
    "action": "Create",
    "entityId": "1548410236",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1548410236,\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0xb0e63dcbc33c484d24c5ba9a047352cb1027ccc213bfac934863f4e0af3faa16",
    "signature": "0xa554fedb8cb6f2eafcd1473654e077cf03adf93a1782db79a8a965105a10190f14e64b7bc86370d21cc706492e11c74b815e4710dfaa65ea6b252086c2a43cce1b",
    "signer": "0xC77475c455Df52bdFde02E81eC064b61e354321c",
    "userId": "81937055"
  }
}