Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
json-glib-devel
json-glib-devel(x86-64)
pkgconfig(json-glib-1.0)

Requires :

libc.so.6()(64bit)
json-glib(x86-64) = 1.0.2-1.el7
libc.so.6(GLIBC_2.2.5)(64bit)
rtld(GNU_HASH)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libjson-glib-1.0.so.0()(64bit)
libpthread.so.0(GLIBC_2.2.5)(64bit)
libpthread.so.0()(64bit)
libgio-2.0.so.0()(64bit)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
pkgconfig(gio-2.0)
libc.so.6(GLIBC_2.4)(64bit)
/usr/bin/pkg-config
libglib-2.0.so.0()(64bit)
rpmlib(PayloadIsXz) <= 5.2-1
pkgconfig(gobject-2.0)
libgobject-2.0.so.0()(64bit)

Content of RPM :
/usr/bin/json-glib-format
/usr/bin/json-glib-validate
/usr/include/json-glib-1.0
/usr/include/json-glib-1.0/json-glib
/usr/include/json-glib-1.0/json-glib/json-builder.h
/usr/include/json-glib-1.0/json-glib/json-enum-types.h
/usr/include/json-glib-1.0/json-glib/json-generator.h
/usr/include/json-glib-1.0/json-glib/json-glib.h
/usr/include/json-glib-1.0/json-glib/json-gobject.h
/usr/include/json-glib-1.0/json-glib/json-gvariant.h
/usr/include/json-glib-1.0/json-glib/json-parser.h
/usr/include/json-glib-1.0/json-glib/json-path.h
/usr/include/json-glib-1.0/json-glib/json-reader.h
/usr/include/json-glib-1.0/json-glib/json-types.h
/usr/include/json-glib-1.0/json-glib/json-version-macros.h
/usr/include/json-glib-1.0/json-glib/json-version.h
/usr/lib64/libjson-glib-1.0.so
/usr/lib64/pkgconfig/json-glib-1.0.pc
/usr/share/gir-1.0/Json-1.0.gir
/usr/share/gtk-doc
/usr/share/gtk-doc/html
/usr/share/gtk-doc/html/json-glib
/usr/share/gtk-doc/html/json-glib/JsonBuilder.html
/usr/share/gtk-doc/html/json-glib/JsonGenerator.html
/usr/share/gtk-doc/html/json-glib/JsonParser.html
/usr/share/gtk-doc/html/json-glib/JsonPath.html
/usr/share/gtk-doc/html/json-glib/JsonReader.html
/usr/share/gtk-doc/html/json-glib/annotation-glossary.html
/usr/share/gtk-doc/html/json-glib/ch01.html
/usr/share/gtk-doc/html/json-glib/ch02.html
There is 40 files more in these RPM.