[MC-126674] Tellraw in clickEvent dosen't work

Commands such as

/tellraw @a {"text":"test","clickEvent":{"action":"run_command","value":"/tellraw @a {"\"text\"":"\"halo\""}"}}

/tellraw @a {"text":"test","clickEvent":{"action":"run_command","value":"/tellraw @a {"text":"halo"}"}}

doesn't work, but

/tellraw @a {"text":"test","clickEvent":{"action":"run_command","value":"/say hi"}}

works. Command like

/tellraw @a {"text":"test","clickEvent":{"action":"run_command","value":"/tellraw @a [hi]"}}

works only with /tellraw part - clickEvent still had JSON format error