Only people who allow subscribers will have a "Subscribe" button on their profile.
1	Only	only	ADV	B	_	2	advmod	_	_
2	people	people	NOUN	S	Number=Plur	7	nsubj	_	_
3	who	who	PRON	PR	PronType=Rel	4	nsubj	_	_
4	allow	allow	VERB	V	Mood=Ind|Number=Plur|Tense=Pres|VerbForm=Fin	2	acl:relcl	_	_
5	subscribers	subscriber	NOUN	S	Number=Plur	4	obj	_	_
6	will	will	AUX	VM	Mood=Ind|Person=3|Tense=Pres|VerbForm=Fin	7	aux	_	_
7	have	have	VERB	V	VerbForm=Inf	0	root	_	_
8	a	a	DET	RI	Definite=Ind|Number=Sing|PronType=Art	12	det	_	_
9	"	"	PUNCT	FB	_	10	punct	_	SpaceAfter=No
10	Subscribe	Subscribe	PROPN	SP	_	12	nmod	_	SpaceAfter=No
11	"	"	PUNCT	FB	_	10	punct	_	_
12	button	button	NOUN	S	Number=Sing	7	obj	_	_
13	on	on	ADP	E	_	15	case	_	_
14	their	their	DET	AP	Poss=Yes|PronType=Prs	15	nmod:poss	_	_
15	profile	profile	NOUN	S	Number=Sing	7	obl	_	SpaceAfter=No
16	.	.	PUNCT	FS	_	7	punct	_	_
