Delete Duplicate attack signature sets

Hi All, I am supposed to write a script to delete duplicate attack signature sets (Security  ››  Options : Application Security : Attack Signatures : Attack Signature Sets) but when I run below rest API, I am not getting the required info:

https://bipmn013lab04.uhc.com/mgmt/tm/asm/signatures-sets

Could someone please help me to get required info of duplicate attack signature sets and delete delete them using rest api 

Example:

bC-Emerging-Threats ------ original

bC-Emerging-Threats_1 ----- duplicate