Is the following Hadith authentic: "Whoever sends blessings upon me a thousand times in one day will not die until he is given the good tidings of Paradise"?

The Hadith: "Whoever invokes blessings upon me a thousand times in a day will not die until he sees his seat in Paradise," has a weak chain of transmission (Sanad).

Even if it were authentic, the glad tidings of Paradise could come from angels at the time of death, fulfilling the words of Allah Almighty: {Indeed, those who say, "Our Lord is Allah," and then remain steadfast, the angels will descend upon them [at death], [saying], "Do not fear nor grieve, but receive good tidings of Paradise, which you were promised."} [Fussilat: 30].

Moreover, these glad tidings could also come through a righteous dream seen by the person being given the good news or seen for him, as the Prophet, peace and blessings be upon him, said: "Nothing remains of the glad tidings of prophethood except the righteous dream that a Muslim sees or is seen for him."