curl --request POST \
  --url https://api.sandbox.isometric.com/mrv/v0/measurement_samples \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-client-secret: <x-client-secret>' \
  --data '{
  "feedstock_type_id": "ftt_1D7KZ1P761S0G7BN",
  "measured_at": "2023-11-07T05:31:56Z",
  "measurement_location_id": "mlc_1CCZASA6Q1S0V8T4",
  "measurement_type": "biochar_production_batch",
  "project_id": "prj_1CTWZQGKE1S0VAXA",
  "storage_location_id": "slc_1F3PMGVC91S0SBK3",
  "supplier_reference_id": "<string>",
  "values": [
    {
      "measurement_property": {
        "qualifier": "base_saturation_ca_2plus",
        "quantity_kind": "acidity"
      },
      "value": {
        "magnitude": 123,
        "standard_deviation": 123,
        "unit": "<string>"
      }
    }
  ]
}'

{
  "id": "mts_1D7HS15KD1S03M0Z",
  "measured_at": "2023-12-25",
  "measurement_location_id": "mlc_1CCZASA6Q1S0V8T4",
  "supplier_reference_id": "<string>",
  "values": [
    {
      "measurement_property": {
        "qualifier": "base_saturation_ca_2plus",
        "quantity_kind": "acidity"
      },
      "value": {
        "magnitude": 123,
        "standard_deviation": 123,
        "unit": "<string>"
      }
    }
  ]
}