Columns in withdrawals:
Array
(
    [Field] => id
    [Type] => int(11)
    [Null] => NO
    [Key] => PRI
    [Default] => 
    [Extra] => auto_increment
)
Array
(
    [Field] => user_id
    [Type] => bigint(20)
    [Null] => NO
    [Key] => MUL
    [Default] => 
    [Extra] => 
)
Array
(
    [Field] => amount
    [Type] => decimal(10,2)
    [Null] => NO
    [Key] => 
    [Default] => 
    [Extra] => 
)
Array
(
    [Field] => payment_method
    [Type] => varchar(50)
    [Null] => NO
    [Key] => 
    [Default] => 
    [Extra] => 
)
Array
(
    [Field] => account_number
    [Type] => varchar(100)
    [Null] => NO
    [Key] => 
    [Default] => 
    [Extra] => 
)
Array
(
    [Field] => pin
    [Type] => varchar(100)
    [Null] => YES
    [Key] => 
    [Default] => 
    [Extra] => 
)
Array
(
    [Field] => status
    [Type] => enum('pending','approved','rejected')
    [Null] => YES
    [Key] => 
    [Default] => pending
    [Extra] => 
)
Array
(
    [Field] => requested_at
    [Type] => timestamp
    [Null] => NO
    [Key] => 
    [Default] => current_timestamp()
    [Extra] => 
)
Array
(
    [Field] => processed_at
    [Type] => timestamp
    [Null] => YES
    [Key] => 
    [Default] => 
    [Extra] => 
)