work_value = "42"
da_header_one = '"Content-Type": "application/json"'
da_header_two = '"FOO-Authentication": "' + work_value + '"'
da_headers = {da_header_one + ', ' + da_header_two}
da_json1 = {da_header_one, da_header_two}
da_json2 = {da_header_two, da_header_one}
da_json3 = {"Content-Type": "application/json", "FOO-Authentication": "42"}
print(f"text1: {da_headers}")
print(f"json1: {da_json1}")
print(f"json2: {da_json2}")
print(f"json2: {da_json3}")