{
  "manageEntity": {
    "action": "Create",
    "entityId": "1558989621",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1558989621,\"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": "0x4ddd3e2c975c1c99e3b9e5bef726325ac8f3f58798b5871762d097295f9fdbc6",
    "signature": "0xe4641abe1e4ee8b6123d89089d8b7aa6f1cd637c717248a801a10eb82bb9af034c3828c276e24c18b3d9626316f32fa280070075f037cd0be72610aaf29c53301c",
    "signer": "0xDcB9c7a7328fEF969b183B16F413686f370457f3",
    "userId": "794549042"
  }
}