How to visualize TransformStamped in rviz

edit

I have a bag with TransformStamped messages that have the following properties:

• header/frame_id: /world
• child_frame_id: /body

I would like to visualize this as TF in rviz, but when I add it as TF topic, the TF tree seems empty (as there are no /tf messages?). How can it still visualize it?

* edit => solution: *

thank you so much for your support! The following mini python node publishes a TFMessage which can be displayed in rviz:

import rospy
from geometry_msgs.msg import TransformStamped
from tf2_msgs.msg import TFMessage

class TFconverter:
    def __init__(self):
        self.pub_tf = rospy.Publisher("/tf", TFMessage, queue_size=1)
        self.sub_msg = rospy.Subscriber("inTransform", TransformStamped, self.my_callback)

    def my_callback(self, data):
        # self.pub_tf.publish(TFMessage([data]))  # works but no 'nicely readable'

        # clearer
        tf_msg = TFMessage()
        tf_msg.transforms.append(data)
        self.pub_tf.publish(tf_msg)

if __name__ == '__main__':
    rospy.init_node('transform_to_TF_node')
    tfb = TFconverter()
    rospy.spin()