post https://api.shasta.trongrid.io/walletsolidity/getcandelegatedmaxsize
Stake2.0 API: query the amount of delegatable resources share of the specified resource type for an address, unit is sun. (Confirmed state)
Returns
max_size - int64 : the amount of delegatable resource share, unit is sun.
Note: If the delegating transaction has a memo, it would consume more bandwidth, therefore the actual delegatable share would be less than the return of this API.