You can push maximum 100 entries per API batch.
{
"users":[
{
"email":"user1@signitic.fr",
"enabled":true,
"path":{
"group":"Group",
"parent":"Parent Entity",
"entity":"Entity"
},
"picture": "https://this-person-does-not-exist.com/img/avatar-6ef8233b4d99932336feda7d4e384965.jpg",
"firstname":"Johanna",
"lastname":"Doe",
"phone":"+33 1 34 33 22 33",
"mobile":"+33 6 34 33 22 33",
"department":"Department",
"jobtitle":"CEO",
"formula":"Kind regards,<br/>John",
"vcard_user": true,
"calendar_link":"calendar.com",
"github_link":"github.com",
"linkedin_link":"linkedin.com",
"whatsapp_link":"whatsapp.com",
"facebook_link":"facebook.com",
"instagram_link":"instagram.com",
"twitter_link":"twitter.com",
"skype_link":"skype.com",
"slack_link":"slack.com",
"address":"1600 Pennsylvania Avenue NW<br/>Washington, DC 20500,<br/>USA",
"extra_1":"extra field 1",
"extra_2":"extra field 2",
"extra_3":"extra field 3",
"extra_4":"extra field 4",
"extra_5":"extra field 5",
"extra_6":"extra field 6",
"extra_7":"extra field 7",
"extra_8":"extra field 8",
"extra_9":"extra field 9",
"extra_10":"extra field 10"
}
]
}