{
  "manageEntity": {
    "action": "Create",
    "entityId": "1499641337",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1499641337,\"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": "0x8692311e6a0e55bba6c458ea8002b90c6b1b2e234cbc30fd757c3fb0292c7d5a",
    "signature": "0xba58f70447781c65a5b86a1948400a08cb7f5fca6176f2200fee64be9db69a774c7c8bb14d072a46ca62d715e57bef59bfb7b6c3ed51dcf51402e753beb8770a1b",
    "signer": "0xEB437c4B0164273356FE14ccBf1dc550Fa6D1E03",
    "userId": "697544461"
  }
}