İstek Header'ları

curl --request POST \
  --url https://dev.flextell.ai/api/v1/customers \
  --header "Authorization: Bearer $TOKEN" \
  --header "X-Tenant: 12" \
  --header "Accept: application/json" \
  --header "Content-Type: application/json" \
  --header "Accept-Language: tr" \
  --header "User-Agent: AcmeCRM/1.2.3" \
  --data '{
    "first_name": "Ayşe",
    "last_name": "Demir",
    "phone_number": "+905551234567"
  }'