Usage:
add_action( 'arm_saved_manual_payment', 'your_function');
function your_function($log_data = array()) {
    //Do Your Action.
    //$log_data Manual Payment Details.
}
Parameters:
$log_data
Manual Payment Details
Usage:
add_action( 'arm_save_manual_payment', 'your_function');
function your_function($log_data = array()) {
    //Do Your Action.
    //$log_data Manual Payment Details.
}
Parameters:
$log_data
Manual Payment Details
Usage:
add_action( 'arm_after_add_transaction', 'your_function');
function your_function($log_data) {
    //Do Your Action.
    //$log_data Transaction Details.
}
Parameters:
$log_data
Transaction Details
Usage:
add_action( 'arm_before_add_transaction', 'your_function');
function your_function($log_data) {
    //Do Your Action.
    //$log_data Transaction Details.
}
Parameters:
$log_data
Transaction Details