Stake an amount

{
  "error": "<string>",
  "pagination": {
    "limit": 123,
    "order": "<string>",
    "page": 123,
    "total": 123
  },
  "result": [
    {
      "amount": 123,
      "due_block": 123,
      "id": "<string>",
      "ops_id2": "<string>",
      "ops_type": "<string>",
      "profile_id": 123,
      "reason": "<string>",
      "shard_id": "<string>",
      "status": "<string>",
      "timestamp": 123,
      "txhash": "<string>",
      "wallet": "<string>"
    }
  ],
  "success": true
}