How do I parse an array of object in Swagger

OpenAPI 3.1

Your nested array can be considered an array of tuples. Tuples are defined using prefixItems. An array of tuples is defined as follows:

# openapi: 3.1.0

type: array
items:
  type: array
  prefixItems:
    # The 1st item
    - type: string
      description: Description of the 1st item
      example: "971"
    # The 2nd item
    - type: number
      description: Description of the 2nd item
      example: 50.0
    # The 2nd item
    - type: number
      description: Description of the 3nd item
      example: 70.0

  # The total number of items in this tuple
  minItems: 3
  maxItems: 3
  additionalItems: false   # can be omitted if `maxItems` is specified

OpenAPI 3.0.x

The inner array can be defined as a generic mixed-type array, i.e. "can contain strings and numbers". But you cannot specifically define that the 1st element is a string and the rest are numbers. This gives us:

type: array
items:
  type: array
  items:
    oneOf:
      - type: string
      - type: number
  example: ["971", 50.0, 70.0]

OpenAPI 2.0

This version does not really support mixed-type arrays like ["971", 50.0, 70.0]. The most you can do is to use a typeless schema {} for the items of the inner array, which means the inner array can contain any values except nulls. You cannot specify the exact types for items, but you can add an example of an array with different item types.

# swagger: '2.0'

type: array
items:
  type: array
  items: {}
  example: ["971", 50.0, 70.0]