curl --request POST \
  --url https://kamino.dial.to/api/v0/leverage/{marketAddress}/closePosition \
  --header 'Content-Type: application/json' \
  --data '{
  "type": "transaction",
  "account": "6JpNV6DK88auwzKVizdeT4Bw3D44sam5GqjcPCJ7y176"
}'

{
  "type": "<any>",
  "transaction": "<string>"
}