POST /v1/private/deposit_collateral

curl --request POST \
  --url https://api.doppapp.com/v1/private/deposit_collateral \
  --header 'Content-Type: application/json' \
  --header 'x-auth-token: <x-auth-token>' \
  --data '{
  "amount": "<string>",
  "currency": "<string>"
}'

{
  "tx_hash": "<string>"
}