{
  "manageEntity": {
    "action": "Create",
    "entityId": "1400865650",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1400865650,\"description\":\"\",\"playlist_name\":\"Ballast Mini Mix (house)\",\"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\":[{\"timestamp\":1780259961,\"metadata_timestamp\":1780259961,\"track_id\":661473454}]}}",
    "nonce": "0xc2f7a0c834932bb01ef829a67172e00ad621f01c2df3a75651ed8016dd72f077",
    "signature": "0xd7cebee86eb6a27c91cc0dc1435b9d3d739da773c8e6eaf2d0f9cc0bfb0ca0bf6624aeecd594d1b69fa499abd8292f682dbd5f7fcf849023743d1730702ec4fb1b",
    "signer": "0x05D4434893815F914255C028DF9Da0a3e11FE0E8",
    "userId": "181835656"
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}