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

"\nExample POST URL:\nhttps://api.hubapi.com/crm-objects/v1/objects/line_items\n\nExample POST JSON:\n[\n  {\n    \"name\": \"hs_product_id\",\n    \"value\": \"1642736\"\n  },\n  {\n    \"name\": \"quantity\",\n    \"value\": \"50\"\n  },\n  {\n    \"name\": \"price\",\n    \"value\": \"9.50\"\n  },\n  {\n    \"name\": \"name\",\n    \"value\": \"A custom name for the product for this line item. Discounting 5% on bulk purchase.\"\n  }\n]\n\nExample Response:\n{\n  \"objectType\": \"LINE_ITEM\",\n  \"portalId\": 62515,\n  \"objectId\": 9867220,\n  \"properties\": {\n    \"amount\": {\n      \"versions\": [\n        {\n          \"name\": \"amount\",\n          \"value\": \"475.00\",\n          \"timestamp\": 0,\n          \"sourceId\": \"LineItemAmountCalculator\",\n          \"source\": \"CALCULATED\",\n          \"sourceVid\": []\n        }\n      ],\n      \"value\": \"475.00\",\n      \"timestamp\": 0,\n      \"source\": \"CALCULATED\",\n      \"sourceId\": \"LineItemAmountCalculator\"\n    },\n    \"quantity\": {\n      \"versions\": [\n        {\n          \"name\": \"quantity\",\n          \"value\": \"50\",\n          \"timestamp\": 1525368534412,\n          \"source\": \"API\",\n          \"sourceVid\": []\n        }\n      ],\n      \"value\": \"50\",\n      \"timestamp\": 1525368534412,\n      \"source\": \"API\",\n      \"sourceId\": null\n    },\n    \"hs_lastmodifieddate\": {\n      \"versions\": [\n        {\n          \"name\": \"hs_lastmodifieddate\",\n          \"value\": \"0\",\n          \"timestamp\": 0,\n          \"source\": \"CALCULATED\",\n          \"sourceVid\": []\n        }\n      ],\n      \"value\": \"0\",\n      \"timestamp\": 0,\n      \"source\": \"CALCULATED\",\n      \"sourceId\": null\n    },\n    \"price\": {\n      \"versions\": [\n        {\n          \"name\": \"price\",\n          \"value\": \"9.50\",\n          \"timestamp\": 1525368534412,\n          \"source\": \"API\",\n          \"sourceVid\": []\n        }\n      ],\n      \"value\": \"9.50\",\n      \"timestamp\": 1525368534412,\n      \"source\": \"API\",\n      \"sourceId\": null\n    },\n    \"name\": {\n      \"versions\": [\n        {\n          \"name\": \"name\",\n          \"value\": \"A custom name for the product for this line item. Discounting 5% on bulk purchase.\",\n          \"timestamp\": 1525368534412,\n          \"source\": \"API\",\n          \"sourceVid\": []\n        }\n      ],\n      \"value\": \"A custom name for the product for this line item. Discounting 5% on bulk purchase.\",\n      \"timestamp\": 1525368534412,\n      \"source\": \"API\",\n      \"sourceId\": null\n    },\n    \"createdate\": {\n      \"versions\": [\n        {\n          \"name\": \"createdate\",\n          \"value\": \"0\",\n          \"timestamp\": 0,\n          \"source\": \"API\",\n          \"sourceVid\": []\n        }\n      ],\n      \"value\": \"0\",\n      \"timestamp\": 0,\n      \"source\": \"API\",\n      \"sourceId\": null\n    },\n    \"description\": {\n      \"versions\": [\n        {\n          \"name\": \"description\",\n          \"value\": \"This product has an updated description and price.\",\n          \"timestamp\": 1525287810508,\n          \"source\": \"API\",\n          \"sourceVid\": []\n        }\n      ],\n      \"value\": \"This product has an updated description and price.\",\n      \"timestamp\": 1525287810508,\n      \"source\": \"API\",\n      \"sourceId\": null\n    },\n    \"hs_product_id\": {\n      \"versions\": [\n        {\n          \"name\": \"hs_product_id\",\n          \"value\": \"1642736\",\n          \"timestamp\": 1525368534412,\n          \"source\": \"API\",\n          \"sourceVid\": []\n        }\n      ],\n      \"value\": \"1642736\",\n      \"timestamp\": 1525368534412,\n      \"source\": \"API\",\n      \"sourceId\": null\n    }\n  },\n  \"version\": 0,\n  \"isDeleted\": false\n}"