The woman -- who asked us not to use her name -- tells TMZ, she walked out of the building at 12:30 AM Tuesday to take her dogs out and saw the man near the door, pacing between the parking garage and entrance, looking agitated and smoking a cigarette. She says, "He looked out of place." He was a white man with scruff on his face wearing a blue winter beanie, a blue zip-up sweatshirt with a hood and blue jeans that were too short, exposing "thick, grey hunting socks" with camel-colored dress shoes.
She says she noticed what looked like a rope, or a clothesline, protruding from the bottom of his sweatshirt, made of white and blue material.  
She says he was staring at another man about 300 feet away, who was standing near another entrance to the building.
She says she got "creeped out" by the man, and after 5 minutes she retreated back into the building.
The woman says she went to sleep and woke up at 4 AM to go to the gym, and noticed a lot of security. She says the concierge told her Jussie was attacked, and when she told him what she saw, the concierge implored her to call a detective and gave her two phone numbers. She made contact that afternoon and downloaded a detective.
As we reported, cops have released photos of 2 persons of interest. We do not know if one of them is the person the woman saw.
Chicago PD sources tell us they have looked at numerous videos in the area in question, but have not seen any footage of an altercation.

Update 01/30/2019: Police are searching for persons of interest in the racist and homophobic attack on Jussie Smollett this week in Chicago. Chicago Police were able to find surveillance footage that showed the persons of interest that are wanted for questioning. The images are expected to be released shortly. 
Police spokesman Anthony Guglielmi explained, "They are outside on a street walking. They are in the area that we have determined it could have taken place… in the time and the area. It certainly leads us to have questions for them." 
Source: Chicago Tribune 
Original 01/29/2019:
According to reports, actor Jussie Smollett, known for his role on Fox’s ‘Empire’ was a victim of an alleged hate crime by two men who are MAGA supporters
Article Image: Update: Footage Provides Persons of Interest in Attack on Jussie SmollettThe two men reportedly beat up the actor while he was at a Subway restaurant in New York around 2 am late Monday morning. Both of the attackers were white and wore ski masks. They approached the actor and began to attack him, which prompted the actor to fight back.
Despite his efforts, he suffered a fractured rib. Along with that, the men reportedly poured bleach on the actor and put his head in a noose, while they screamed “This is MAGA country” at him.
Smollett has been treated at the Northwestern Memorial Hospital and was discharged from the hospital Tuesday morning.
source: TMZ