How to call exit function for POS Bridge with parameter of Calldata

I am working on POS Bridge for Ethereum to Matic and Matic to Ethereum NFT transfer. I have done all the steps. Transferred NFT from ethereum to matic. When I am trying to transfer nft to ethereum from matic. I burned that specific token. But i dont know how to pass calldata parameter to exit function on Root chain manager proxy contract. How to get that bytes calldata?

Hi @shubhangi, Thanks for replying. I used the API, you mentioned above.
this is my burn Tx on Mumbai network Polygon Transaction Hash (Txhash) Details | PolygonScan

response: {“error”:true,“message”:“Incorrect Burn tx”}