Adds an identity to a user's profile. An agent can add an identity to any user profile. Supported identity types: | Type | Example | | ---------------- | ------- | | email | `{ "type" : "email", "value" : "someone@example.com" }` | | twitter | `{ "type" : "twitter", "value" : "screen_name" }` | | facebook | `{ "type" : "facebook", "value" : "855769377321" }` | | google | `{ "type" : "google", "value" : "example@gmail.com" }` | | agent_forwarding | `{ "type" : "agent_forwarding", "value" : "+1 555-123-4567" }` | | phone_number | `{ "type" : "phone_number", "value" : "+1 555-123-4567" }` | To create an identity without sending out a verification email, include a `"skip_verify_email": true` property. The `"skip_verify_email": true` property does not apply when updating your own agent profile. A welcome or verification email will be sent regardless of this se