Membership2 Pro importing users existing in WordPress

Hi,

I have about 30,000 users in the wp_users table, is there an easy way for users to subscribe to the membership2 Pro memberships? Hopefully I am not missing something obvious, but I tried to update the Json blob in wp_usermeta meta_key = ‘ms_subscriptions’, but was unsuccessful. I also tried to import a modified version of the Json file that is generated by going to Dashboard -> Membership 2 -> Settings -> Import Tool -> “Generate Export”. I added subscription data to “subscriptions”: [ ] area for a user that was not subscribed, but that didn’t work either. Also, how is “id”: XXXX, generated. That might be my issue. Below is the Json file I am importing. Your help is appreciated.

{

“source_key”:”membership2″,

“source”:”Membership2″,

“plugin_version”:”1.0.3.0″,

“export_time”:”2016-08-02 09:37″,

“notes”:

[

“Exported data:”,

“- Memberships (without protection rules)”,

“- Members (including Stripe/Authorize payment settings)”,

“- Subscriptions (link between Members and Memberships)”,

“- Invoices”

],

“memberships”:

[

{

“id”:10000,

“name”:”System Membership”,

“description”:”Membership2 Core Membership”,

“type”:”base”,

“active”:true,

“private”:false,

“free”:false,

“price”:0,

“trial”:false,

“payment_type”:”permanent”

},

{

“id”:10001,

“name”:”Experts Default Membership”,

“description”:””,

“type”:”simple”,

“active”:true,

“private”:false,

“free”:true

}

],

“members”:

[

{

“id”:10002,

“email”:”testuser@yahoo.com”,

“username”:”testuser”,

“payment”:

{

“stripe_card_exp”:””,

“stripe_card_num”:””,

“stripe_customer”:””,

“authorize_card_exp”:””,

“authorize_card_num”:””,

“authorize_cim_profile”:””,

“authorize_cim_payment_profile”:””

},

“subscriptions”:

[

{

“id”:10003,

“membership”:10001,

“status”:”active”,

“gateway”:”admin”,

“start”:”2016-08-02″,

“end”:””,

“trial_finished”:”1″,

“invoices”:[]

}

]

},

{

“id”:10004,

“email”:”tonkymm@yahoo.com”,

“username”:”tonkymm”,

“payment”:

{

“stripe_card_exp”:””,

“stripe_card_num”:””,

“stripe_customer”:””,

“authorize_card_exp”:””,

“authorize_card_num”:””,

“authorize_cim_profile”:””,

“authorize_cim_payment_profile”:””

},

“subscriptions”:

[

{

“id”:10005,

“membership”:10001,

“status”:”active”,

“gateway”:”admin”,

“start”:”2016-08-02″,

“end”:””,

“trial_finished”:”1″,

“invoices”:[]

}

]

}

],

“settings”:

{

“enabled”:true,

“hide_toolbar”:true,

“currency”:”USD”,

“invoice_sender”:””

},

“coupons”:[]

}