curl --request POST \
  --url https://grid.squads.xyz/api/grid/v1/accounts/{address}/spending-limit/{spending_limit_address}/transactions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "amount": 1,
  "recipient_address": "<string>",
  "signer_address": "<string>"
}'

{
  "kms_payloads": [
    {
      "address": "<string>",
      "payload": "<string>",
      "provider": "privy"
    }
  ],
  "transaction": "<string>",
  "transaction_signers": [
    "<string>"
  ]
}