In the API playground, I can change a column value using
mutation {change_simple_column_value (board_id: 12345, item_id: 54321, column_id: "text3", value: "{00002_0000067584}") {id}}
But if I send the folowing in my JSON request to the API endpoint, I get a 500 error
{"mutation": "mutation {change_simple_column_value (board_id: 12345, item_id: 54321, column_id: "text3", value: "{00002_0000067584}}") {id}}"}
I have also tried without the {} but I get the same error.
My guess is I am constructing the JSON incorrectly to resolve to GraphQL but I have exhausted different approaches, what am I doing wrong?
Jon