In Daniel 7, the Ancient of Days is identified. I assume that this is referring to G-d Himself. Then, "one like a man" approaches the Ancient of Days, and to this one is given "a dominion and glory and a kingdom" and all the world will serve him. Indeed, his dominion will be "an eternal dominion".
I saw in the visions of the night, and behold with the clouds of the heaven, one like a man was coming, and he came up to the Ancient of Days and was brought before Him. And He gave him dominion and glory and a kingdom, and all peoples, nations, and tongues shall serve him; his dominion is an eternal dominion, which will not be removed, and his kingdom is one which will not be destroyed. Daniel 7:13-14
What interpretations are given for who this "one like a man" is?