{
  "manageEntity": {
    "action": "Create",
    "entityId": "1571414659",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1571414659,\"description\":\"\",\"playlist_name\":\"cover songs pop\",\"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": "0x2958295887ec690c0d4e7b868e9decf0adb4ff412639194b797a6165d24a853b",
    "signature": "0x59d2fc37737fa9cc243ea2e33d628a32479a70e0238efe32a83366bdd6f75e7a29461043eefe421a34d3baabc5c15e899d03ad509c86f23e9a3470a3e65bbeb71b",
    "signer": "0x66a164982b85dBC887E346DecC1dffBa4afD1776",
    "userId": "960328121"
  }
}