Delete item {0: {json:{id: 12324}}}

When i try to mutate/delete item with id i am geting this payload

{0: {json:{id: 12324}}}

{0: {json:{id: 12324}}}

, without trpc everything working fine, dont understand where the

{0: {json:{id: 12324}}}

{0: {json:{id: 12324}}}

coming from? what is batch 1?

Delete item {0: {json:{id: 12324}}} - tRPC