OperationType:
| "vote_operation"
| "comment_operation"
| "transfer_operation"
| "transfer_to_vesting_operation"
| "withdraw_vesting_operation"
| "account_create_operation"
| "account_update_operation"
| "witness_update_operation"
| "account_witness_vote_operation"
| "account_witness_proxy_operation"
| "custom_operation"
| "delete_comment_operation"
| "custom_json_operation"
| "comment_options_operation"
| "set_withdraw_vesting_route_operation"
| "claim_account_operation"
| "create_claimed_account_operation"
| "request_account_recovery_operation"
| "recover_account_operation"
| "change_recovery_account_operation"
| "escrow_transfer_operation"
| "escrow_dispute_operation"
| "escrow_release_operation"
| "escrow_approve_operation"
| "transfer_to_savings_operation"
| "transfer_from_savings_operation"
| "cancel_transfer_from_savings_operation"
| "custom_binary_operation"
| "decline_voting_rights_operation"
| "reset_account_operation"
| "set_reset_account_operation"
| "claim_reward_balance_operation"
| "delegate_vesting_shares_operation"
| "witness_set_properties_operation"
| "create_proposal_operation"
| "update_proposal_votes_operation"
| "remove_proposal_operation"
Operation type. Ref: https://gitlab.com/blurt/blurt/-/blob/dev/libraries/protocol/include/blurt/protocol/operations.hpp