Hii!
The salary varies as per different firms, companies and the job requirements. In India, on an average, a fresher in digital marketing gets INR 3-4 lakhs per annum. But, as he gains experience of upto 4 to 8 years, the salary may range between INR 8-9 lakhs.  But, this may vary as per the qualifications, performance and experience.
Hope this helps.
Good luck!