Is there any OOTB functionality to parse dynamic JSON object from REST API Response ? I have the JSON like below. If you use pzExternalName qualifier value is hardcoded (00002237711), it is mapping correctly. Is there any way to pass pzExternalName qualifier value dynamically ?

"formulary_attributes": {     "00002237711": {       "abc_xyz": null,       "xyz_days_supply": null,       "abc_therapy": null,       "xyz_generic": null            }     "00003452711": {       "abc_xyz": null,       "xyz_days_supply": null,       "abc_therapy": null,       "xyz_generic": null     }   }