{
  "manageEntity": {
    "action": "Create",
    "entityId": "1857614357",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1857614357,\"description\":\"Dubstep, DnB and heavy bass music at 140 BPM. The tempo that moves the crowd. Pure energy.\",\"playlist_name\":\"140 BPM Club\",\"is_private\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0x77ffeaf54349efc56f249fc57864f7b5598195299e438d487913126c1186c0eb",
    "signature": "0xb059416c749a7bad094a2628a8c97c45c86c8ad5c7526cd6e8da2c655082bf531d4fde352c79b8c67a07fe2d83e41799e745ab360f8650f8c56798f3d7d400ad1b",
    "signer": "0x906A692343E80CDAb7C8fd1c292878CE15f5190B",
    "userId": "385296701"
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}