{
  "manageEntity": {
    "action": "Create",
    "entityId": "590704195",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":590704195,\"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": "0xa245622a4ae9180c9201406d48a09e1e1c3c989e04d5e46ea9c1ba574c2d5936",
    "signature": "0xf7966b7c67bfcc4890af58237c30fa3e65f9b13aa7136e4cf67ef54fb0af36ae0f95f80208296cac28eab58ea9c1271d5612927fb9a5a25b143ccf1755d100b41b",
    "signer": "0x1532bbb5E3C9d3325f92edbe22EBeE8F5C43eB2F",
    "userId": "297337347"
  }
}