json object in ajax jquery request

json object in ajax jquery request

I have the following HTTP request workload
{jsonObj={"Nids":"<Id>20</Id><Id>22</Id>","Mids":"\"<Id>337</Id><Id>330</Id><Id>333</Id><Id>335</Id><Id>328</Id>\"","PageNo":"\"3\""}}
I have the following error Invalid object passed in, \u0027:\u0027 or
\u0027}\u0027 expected
what could be the problem ?