Umer

fix: api parsing

1

### Checklist - [x] I have read the [coding guide](https://github.com/ethersphere/bee/blob/master/CODING.md). - [ ] My change requires a documentation update, and I have done it. - [ ] My change requires...

refactor: simplify input validation

1

### Checklist - [x] I have read the [coding guide](https://github.com/ethersphere/bee/blob/master/CODING.md) - [ ] My change requires a documentation update and I have done it - [ ] I have added...