curl --location --request POST 'https://api.falken.ltd/api/athletes//training-plans//activities' \
--header 'Content-Type: application/json' \
--data-raw '{
"scheduledDate": "2019-08-24T14:15:22.123Z",
"dayOfWeek": 0,
"activityType": 0,
"durationMinutes": 0,
"description": "string",
"isCompleted": true,
"completionNotes": "string",
"journalEntryId": "72600ee4-b304-47f3-89cd-f685d2692490"
}'{
"id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
"trainingPlanId": "3b4e7bbf-43d0-45c0-a832-cfa322a7b4ed",
"scheduledDate": "2019-08-24T14:15:22.123Z",
"dayOfWeek": 0,
"activityType": 0,
"durationMinutes": 0,
"description": "string",
"isCompleted": true,
"completionNotes": "string",
"journalEntryId": "72600ee4-b304-47f3-89cd-f685d2692490",
"createdUtc": "2019-08-24T14:15:22.123Z",
"updatedUtc": "2019-08-24T14:15:22.123Z"
}