服务商分账是不是不能用v3版本？签名方式还是用hmac-sha256?

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服务商分账是不是不能用v3版本？签名方式还是用hmac-sha256?Is the v3 version not available for service providers? Is the signature method still hmac-sha256?

For example, V3 accounts only see direct merchants, but not service providers. Therefore, the signature method of V3 is not used for service providers' accounts?

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