aws dynamodb create-table --table-name test_table --attribute-definitions AttributeName=time_stamp,AttributeType=N AttributeName=watch_uuid,AttributeType=S --key-schema AttributeName=watch_uuid,KeyType=HASH AttributeName=time_stamp,KeyType=RANGE --billing-mode PROVISIONED --provisioned-throughput ReadCapacityUnits=1,WriteCapacityUnits=1

aws dynamodb batch-write-item --request-items file://items.json.1.batch.write.txt

{
    "test_table": [
        {
            "PutRequest": {
                "Item": {
                    "owner_name": {
                        "S": "Test watch 3"
                    },
                    "time_stamp": {
                        "N": "1541524533453"
                    },
                    "watch_uuid": {
                        "S": "A9A0E8B2-CD8D-464A-8787-383A85919A06_1541524533453_Test watch 3"
                    },
                    "y_user_accel": {
                        "S": "0.07286"
                    }
                }
            },
            "PutRequest": {
                "Item": {
                    "owner_name": {
                        "S": "Test watch 4"
                    },
                    "time_stamp": {
                        "N": "1541524533765"
                    },
                    "watch_uuid": {
                        "S": "A9A0E8B2-CD8D-464A-8787-383A85919A06_1541524533453_Test watch 4"
                    },
                    "y_user_accel": {
                        "S": "0.07286"
                    }
                }
            }
        }
    ]
}