mutation {
  set_flow_group_default_parameters(
    input: {
      flow_group_id: "...", 
      parameters: {"name": "test"}
    } 
  ) {
    success
  }
}

Syntax Error: Expected Name, found String "name".

name

"Expected type JSON!, found {name: \"test\"}; 'ObjectValueNode' object has no attribute 'value'"

success = await api.flow_groups.set_flow_group_default_parameters(flow_group_id=flow_group_id, parameters={"meep": "morp", "bleep": "blorp"})

query = """
mutation SetDefaultParams($input: set_flow_group_default_parameters_input!){
  set_flow_group_default_parameters(input: $input) {
    success
  }
}
"""
from prefect.client import Client 
client = Client()
_input = {"input": 
      {
        "flow_group_id": "7fb20810-cd37-41cf-9b04-218c284f6db5", 
        "parameters": {"x": "test test test"}
      }
} 

print(client.graphql(query, variables=_input))