{"error":"missing or invalid parameters: form_a, form_b"}
{"error":"one of the forms does not exist"}
{"ok":1,"is_equal":1}
"{"error":"fields are not equal","form_a":[{"name":"test field","type":"input","meta":"{\"id\":1586980384132}"},{"name":"subform","type":"subform","extras":{"values":670505},"meta":"{\"id\":1586980384133}"},{"name":"calc","type":"calculation","meta":"{\"calculation_format\":1}"},{"name":"sig","type":"signature"},{"name":"img","type":"image"},{"name":"selectm","type":"select-multiple"},{"name":"select","type":"select"},{"name":"dept","type":"department"}],"form_b":[{"name":"test field","type":"input","meta":"{\"id\":1586980384132}"}]}"