After you allow subscribers, a "Subscribe" button will show up on your Profile.
1	After	after	ADP	E	_	3	mark	_	_
2	you	you	PRON	PE	Person=2|PronType=Prs	3	nsubj	_	_
3	allow	allow	VERB	V	Mood=Ind|Number=Plur|Tense=Pres|VerbForm=Fin	12	advcl	_	_
4	subscribers	subscriber	NOUN	S	Number=Plur	3	obj	_	SpaceAfter=No
5	,	,	PUNCT	FF	_	3	punct	_	_
6	a	a	DET	RI	Definite=Ind|Number=Sing|PronType=Art	10	det	_	_
7	"	"	PUNCT	FB	_	8	punct	_	SpaceAfter=No
8	Subscribe	Subscribe	PROPN	SP	_	10	nmod	_	SpaceAfter=No
9	"	"	PUNCT	FB	_	8	punct	_	_
10	button	button	NOUN	S	Number=Sing	12	nsubj	_	_
11	will	will	AUX	VM	Mood=Ind|Person=3|Tense=Pres|VerbForm=Fin	12	aux	_	_
12	show	show	VERB	V	VerbForm=Inf	0	root	_	_
13	up	up	ADV	B	_	12	compound:prt	_	_
14	on	on	ADP	E	_	16	case	_	_
15	your	you	DET	AP	Poss=Yes|PronType=Prs	16	nmod:poss	_	_
16	Profile	profile	NOUN	S	Number=Sing	12	obl	_	SpaceAfter=No
17	.	.	PUNCT	FS	_	12	punct	_	_
