{
  "manageEntity": {
    "action": "Create",
    "entityId": "617972922",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":617972922,\"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": "0x64646e28b891d70d65bb1c7a187191d611b7fb2c824f8b185e8104484de12196",
    "signature": "0x2c8d968a5fe029dc14ee0dda53595a9c3a742fb02f717deacf1c386d780e54c7266c6f9fa8afaa6b95edb39c0b596a973adc7c804dc83061c8e1eb7f76fb91a81c",
    "signer": "0x149dB7F9Bc7734a6AB271f952D733afb4E82d040",
    "userId": "740584619"
  }
}