curl --request POST \
  --url https://api.example.com/next_light_client_block \
  --header 'Content-Type: application/json' \
  --data '
{
  "method": "next_light_client_block",
  "params": {
    "last_block_hash": "<string>"
  },
  "id": "dontcare",
  "jsonrpc": "2.0"
}
'

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    method: 'next_light_client_block',
    params: {last_block_hash: '<string>'},
    id: 'dontcare',
    jsonrpc: '2.0'
  })
};

fetch('https://api.example.com/next_light_client_block', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.example.com/next_light_client_block"

payload = {
    "method": "next_light_client_block",
    "params": { "last_block_hash": "<string>" },
    "id": "dontcare",
    "jsonrpc": "2.0"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "result": {
    "approvals_after_next": [
      "<string>"
    ],
    "inner_lite": {
      "block_merkle_root": "<string>",
      "epoch_id": "<string>",
      "height": 1,
      "next_bp_hash": "<string>",
      "next_epoch_id": "<string>",
      "outcome_root": "<string>",
      "prev_state_root": "<string>",
      "timestamp": 1,
      "timestamp_nanosec": "<string>"
    },
    "inner_rest_hash": "<string>",
    "next_block_inner_hash": "<string>",
    "next_bps": [
      {
        "account_id": "<string>",
        "public_key": "<string>",
        "stake": "<string>",
        "validator_stake_struct_version": "V1"
      }
    ],
    "prev_block_hash": "<string>"
  },
  "id": "<string>",
  "jsonrpc": "<string>"
}