{
  "manageEntity": {
    "action": "Create",
    "entityId": "1971623349",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1971623349,\"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": "0xd4f1d04952a0d90ddefbdc763430c3ebcdb13a114b4e20cad9d4c20982d7ffb0",
    "signature": "0xc697a136b3d6fd2bfe5b980d496edefe7d94543d842b99062faa028434a480a05102116b5f15b6544a449236121d949ee55f4cd78536c28e5c06678c9c4875191b",
    "signer": "0x680514367f5E83bAcCbB03125aB2D053a3b288FB",
    "userId": "222170086"
  }
}