curl --request POST \
  --url https://mainnet.gomaestro-api.org/v1/contracts/multisig/initiate \
  --header 'Content-Type: application/json' \
  --header 'api-key: <api-key>' \
  --data '
{
  "signers_addr": [
    "<string>"
  ],
  "threshold": 123,
  "spending_limit": 123,
  "total_funds_qty": 123,
  "initiator_address": "<string>",
  "fund_policy_id": "<string>",
  "fund_asset_name": "<string>"
}
'

{
  "cbor_hex": "<string>",
  "tx_hash": "<string>"
}