{
  "manageEntity": {
    "action": "Create",
    "entityId": "311738402",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":311738402,\"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": "0x3c7ed7fcf0c9c38f6d8acff9d4c49f5d9545fa5ebab541c82e0ea81f6119037c",
    "signature": "0x777bf8a2c8cc3d241827175b7e532dd8ebbea3ce258a6417f8e80ab27a8d9f0a6bb75cd49dc28575ad4b0d0ec7cad95b3bbada1314202779f97b7674761cfc201c",
    "signer": "0x9a9D8658eB66a22B3C536280FF4375B0a531693b",
    "userId": "375752"
  }
}