curl --request POST \
  --url https://api.hubapi.com/crm-objects/v1/objects/products/batch-create

[
  {
    "name": "name",
    "value": "Another new product"
  },
  {
    "name": "description",
    "value": "A description of yet another product."
  },
  {
    "name": "price",
    "value": "250.00"
  },
  {
    "name": "recurringbillingfrequency",
    "value": "annually"
  },
  {
    "name": "name",
    "value": "A second new product"
  },
  {
    "name": "description",
    "value": "A description the second new product."
  },
  {
    "name": "price",
    "value": "75.00"
  },
  {
    "name": "recurringbillingfrequency",
    "value": "hourly"
  },
  {
    "versions": [
      {
        "name": "hs_lastmodifieddate",
        "value": "0",
        "timestamp": 0,
        "source": "CALCULATED",
        "sourceVid": []
      }
    ],
    "value": "0",
    "timestamp": 0,
    "source": "CALCULATED",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "price",
        "value": "250.00",
        "timestamp": 1525289943771,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "250.00",
    "timestamp": 1525289943771,
    "source": "API",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "name",
        "value": "Another new product",
        "timestamp": 1525289943771,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "Another new product",
    "timestamp": 1525289943771,
    "source": "API",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "createdate",
        "value": "0",
        "timestamp": 0,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "0",
    "timestamp": 0,
    "source": "API",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "description",
        "value": "A description of yet another product.",
        "timestamp": 1525289943771,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "A description of yet another product.",
    "timestamp": 1525289943771,
    "source": "API",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "recurringbillingfrequency",
        "value": "annually",
        "timestamp": 1525289943771,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "annually",
    "timestamp": 1525289943771,
    "source": "API",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "hs_lastmodifieddate",
        "value": "0",
        "timestamp": 0,
        "source": "CALCULATED",
        "sourceVid": []
      }
    ],
    "value": "0",
    "timestamp": 0,
    "source": "CALCULATED",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "price",
        "value": "75.00",
        "timestamp": 1525289943771,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "75.00",
    "timestamp": 1525289943771,
    "source": "API",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "name",
        "value": "A second new product",
        "timestamp": 1525289943771,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "A second new product",
    "timestamp": 1525289943771,
    "source": "API",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "createdate",
        "value": "0",
        "timestamp": 0,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "0",
    "timestamp": 0,
    "source": "API",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "description",
        "value": "A description the second new product.",
        "timestamp": 1525289943771,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "A description the second new product.",
    "timestamp": 1525289943771,
    "source": "API",
    "sourceId": null
  },
  {
    "versions": [
      {
        "name": "recurringbillingfrequency",
        "value": "hourly",
        "timestamp": 1525289943771,
        "source": "API",
        "sourceVid": []
      }
    ],
    "value": "hourly",
    "timestamp": 1525289943771,
    "source": "API",
    "sourceId": null
  }
]