You can probably adapt a template and follow instructions from a county website such as this one.
However based on your statements and what I’ve read, I might be inclined to file a Motion for Definite Statement based on the following rule:

Quoting
Ohio Rules of Civil Procedure 12(E)
Motion for definite statement. If a pleading to which a responsive pleading is permitted is so vague or ambiguous that a party cannot reasonably be required to frame a responsive pleading, he may move for a definite statement before interposing his responsive pleading. The motion shall point out the defects complained of and the details desired. If the motion is granted and the order of the court is not obeyed within fourteen days after notice of the order or within such other time as the court may fix, the court may strike the pleading to which the motion was directed or make such order as it deems just.
The attachment you described is probably insufficient. According to what I’ve been reading, attachments should contain:
"(1) a beginning balance of zero, or a sum that can qualify as an account stated, or some other provable sum; (2) listed items, or an item, dated and identifiable by number or otherwise, representing charges, or debits, and credits; and (3) a summarization by means of a running or developing balance, or an arrangement of beginning balance and items that permits the calculation of the amount claimed to be due." Great Seneca Fin. v. Felty, 170 Ohio App.3d 737, 2006-Ohio-6618, 869 N.E.2d 30, ¶6.
Also the debt collector has to show a copy of all contracts of assignment and/or other instruments (with corporate seal or letterhead) transferring ownership of the account at issue from the original owner to the Plaintiff. Worldwide Asset Purchasing, L.L.C. v. Sandoval, 8th Dist. No. 2007-CA-00159, 2008-Ohio-6343, ¶26
To summarize, they should attach:
- A copy of the account which includes (a) a starting zero balance (b) each and every transaction since the zero balance showing the date, amount, and identification of each transaction; and (c) a running balance or other arrangement which permits calculation of the amount due.
- A copy of the credit card agreement/terms and conditions, including the original application and agreement, and any and every subsequent amendment.
- A copy of all contracts of assignment and/or other instruments (with corporate seal or letterhead) transferring ownership of the account at issue from the original owner to the Plaintiff.
Without those attachments it’s possible the case could be dismissed based on a motion for definite statement, since there’s a good likelihood that the debt collector can’t access all the specific items required to be attached. Essentially they are asking you to commit to a new contract based on a bluff that they can win their case. By opposing the action you probably gain leverage that at very least could get you a better deal.
However I do realize that you might desire a simpler and easier approach, so it’s really your call. Another factor would also be your current income and ability to keep up payments.