how to download attachment of an custom object record using API or Deeplink

Summary

is there any API or deeplink available to download attachment

Content

HI All,

I'm checking for an API or deeplink to download attachment, i have tried with

1. /crmRestApi/resources/11.13.18.05/opportunities/1817901/child/Attachment

2. im prefixing the http:hostname.oraclecloud.com to the file URL from response but not able to download the file, can someone help with correct API or deeplink.

"/content/conn/FusionAppsContentRepository/uuid/dDocID%3a1017688?XFND_SCHEME_ID=1&XFND_CERT_FP=70B716D6429ACC5C8B8CAF0C7F6EC2123FE7E670&XFND_RANDOM=6834542527958465997&XFND_EXPIRES=1614847301419&XFND_SIGNATURE=Vi3bHeT8fVhaTVAAJwP-iKuXwVLxPpDiceHXClrJxfQ-c4iT1dy5zxq~mfDXFmtE5b4PzM250zwLmGzHRVuz-osnqXAhsowmKojvBK4KSudiySdA56qsWEDr8~Aw37V2wJzR1aVQFsd5ahHBzhe6QB5KdFDT6iPNpxJn9Q2eaOk9XKLMUE3ezRn2glfvtP3J5~dmip2QSulh05ZUY-tkDJWr1IZrkeA2tYsoWK5a9~ZialS5Vw6jvtoip0E7sIfqQ2peqZzHAprLOrH9edXOipWxwPP2zU4X7FpomNw-NYaQ-priZDddFIZ82lgIO6wuztDKiE6nWTVN-wc1p1LUlQ__&Id=1017688&download