Post Donor View Entity Message

curl --request POST \
  --url https://api.helpyousponsor.com/v1/frontend/donor/dashboard/entity/compose_message/{client_id}/{program_id}/{entity_id}/{parent_id}/{session_id} \
  --header 'Content-Type: application/json' \
  --header 'session_id: <api-key>' \
  --data '{
  "subject": "Subject of Message",
  "message": "Message content"
}'

{
  "status": "success",
  "redirect": "<string>"
}