JSON sent: {"app_id":"de0d6b5e-28e9-4d18-8f3e-14101ed8c1f4","include_player_ids":["6edf925f-0170-4f6d-918f-3b83497d84fe"],"data":{"foo":"bar"},"contents":{"en":"Test Test Test"}} JSON received: {"allresponses":"{\"id\":\"\",\"recipients\":0,\"errors\":{\"invalid_player_ids\":[\"6edf925f-0170-4f6d-918f-3b83497d84fe\"]}}"}