通过协议号查询签约

商户通过签约协议号可查询签约信息，当合约不存在时返回NOT_FOUND错误码 官方文档

wxpay.v3.eduschoolpay.contracts._contract_id_.get({
  contract_id,
})
.then(
  ({ 
    data: {
      contract_id,
      mchid,
      appid,
      openid,
      plan_id,
      contract_status,
      create_time,
      out_contract_code,
    },
  }) => ({
    contract_id,
    mchid,
    appid,
    openid,
    plan_id,
    contract_status,
    create_time,
    out_contract_code,
  })
)