From the service page I tried
Service: switch.broadlink_send_packet_192_168_1_76
Json code:
{“packet”: [
“JgBwAAABKZQUERQ3ExITNxM3FDcTNxMSEzcUERQ2FBEUERQRFBETNxQ3ExITNxM3FDcTEhMRFBEWDxQ3FRATERQRFDcTNxM3FAAFIgABKkkUAAxhAAEpSRQADGEAASlJFAAMYQABKUoVAAxfAAEpShMADQUAAAAAAAAAAA==”
]}
Try replacing the quotes around packet. When I paste your service data into the developer tools service pane. I get an error of invalid json and managed to resolve it by replacing the quotes around packet. I have pasted below the service data which seemed to work for me. Hope this helps.