{
  "manageEntity": {
    "action": "Create",
    "entityId": "1899556335",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1899556335,\"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": "0xc28f1dd60980486e65b3b82867baf0e7b4c95d9caa286f3c0ca38a021088d59f",
    "signature": "0x59f32edf07d4bf606ad3c540b50d72b77bce43c104df680c21df106a7fee90e9337ccf47795259dcf48d5fc7f774d17b7cdd1312bbaf3e805bce9ee51a69432a1b",
    "signer": "0xdB453B3e8F14c70b8129c91f28aFFc16291F53f1",
    "userId": "783337209"
  }
}