--url https://api.privy.io/v1/wallets/{wallet_id}/rpc \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --header 'privy-app-id: <privy-app-id>' \
  --data '{
  "method": "transfer",
  "network": "MAINNET",
  "params": {
    "receiver_spark_address": "sprt1pgss8z35rpycv4duqdk5u3sclhjnztjunv5yajlwk69tyv5fsvwwe9mg8n4d49",
    "amount_sats": 16
  }
}'

{
  "method": "transfer",
  "data": {
    "id": "01983eb7-4008-7b73-b269-c0bd86955a1b",
    "sender_identity_public_key": "027bca218b2853d5ff2e9b174370f58107a23df98a759e968c523253c1702dd485",
    "receiver_identity_public_key": "038a3418498655bc036d4e4618fde5312e5c9b284ecbeeb68ab23289831cec9768",
    "status": "TRANSFER_STATUS_SENDER_KEY_TWEAKED",
    "total_value": 16,
    "expiry_time": "1970-01-01T00:00:00.000Z",
    "leaves": [
      {
        "leaf": {
          "id": "01983e38-b2f8-7649-a910-b2be1424de1d",
          "tree_id": "01983e36-e645-7a34-ab95-a6faec210992",
          "value": 16,
          "parent_node_id": "01983e38-b2e2-7edd-9b6b-a784545aa28c",
          "node_tx": "<hex-encoded-tx>",
          "refund_tx": "<hex-encoded-refund>",
          "vout": 0,
          "verifying_public_key": "<pubkey>",
          "owner_identity_public_key": "<pubkey>",
          "signing_keyshare": {
            "owner_identifiers": ["...", "..."],
            "threshold": 2,
            "public_key": "<pubkey>",
            "public_shares": {
              "...": "<pubkey>",
              "...": "<pubkey>"
            },
            "updated_time": "2025-07-24T23:14:14.598Z"
          },
          "status": "TRANSFER_LOCKED",
          "network": "MAINNET"
        },
        "secret_cipher": "<ciphertext>",
        "signature": "<hex>",
        "intermediate_refund_tx": "<hex>"
      }
    ],
    "created_time": "2025-07-24T23:14:14.276Z",
    "updated_time": "2025-07-24T23:14:14.618Z",
    "type": "TRANSFER",
    "transfer_direction": "OUTGOING",
    "encoding": "hex"
  }
}