Go map格式化问题请教

[
    [1, '10.121.1.1:4730'], 
    [2, '127.0.0.1:4730'],
    [3, '127.0.0.1:4730']
]

如何格式化为以下格式 用go

{
    '10.121.1.1:4730':
        [1, '10.121.1.1:4730'], 
    '127.0.0.1:4730':
        [2, '127.0.0.1:4730'],
        [3, '127.0.0.1:4730']
}
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