{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Sendbird User Structure",
  "description": "Structure documentation for the Sendbird User resource.",
  "type": "object",
  "structure": {
    "user_id": {
      "type": "string",
      "description": "Unique identifier for the user within the Sendbird application.",
      "example": "user_12345"
    },
    "nickname": {
      "type": "string",
      "description": "Display name shown in chat.",
      "example": "Jane Smith"
    },
    "profile_url": {
      "type": "string",
      "format": "uri",
      "description": "URL of the user's profile image.",
      "example": "https://example.com/avatars/jane.png"
    },
    "is_online": {
      "type": "boolean",
      "description": "Real-time online presence status.",
      "example": true
    },
    "is_active": {
      "type": "boolean",
      "description": "Whether the user account is active (not deactivated).",
      "example": true
    },
    "last_seen_at": {
      "type": "integer",
      "description": "Unix timestamp (ms) of last activity.",
      "example": 1746172800000
    },
    "access_token": {
      "type": "string",
      "description": "Session access token for SDK authentication.",
      "example": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
    },
    "metadata": {
      "type": "object",
      "description": "Custom key-value metadata.",
      "example": {"role": "support-agent", "department": "tier-1"}
    },
    "created_at": {
      "type": "integer",
      "description": "Unix timestamp (ms) when the user was created.",
      "example": 1704067200000
    }
  }
}