{
  "manageEntity": {
    "action": "Create",
    "entityId": "1853048457",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1853048457,\"description\":\"\",\"playlist_name\":\"idly\",\"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\":[{\"timestamp\":1777574190,\"metadata_timestamp\":1777574190,\"track_id\":1685105582}]}}",
    "nonce": "0xd9e4d57f6742c2a04ca66938990fac59bd6dd6692475a226fcde1475027e683c",
    "signature": "0x2ff095ff3aa67465735a76821e158f10b6ea31175c2332c7926ca4b32aabf6a756dc3e1a917cf79763e757f860d9a0aa6bac1235f4125c96a024def50ed063af1c",
    "signer": "0xb1221228F9576538D816772652ed0277d44aE1e8",
    "userId": "709770020"
  }
}