emqx4.3/apps/emqx_authentication/data/user-credentials.json

[
    {
        "user_id":"myuser1",
        "password_hash":"09343625c6c123d3434932fe1ce08bae5ac00a8f95bd746e10491b0bafdd1817"
    },
    {
        "user_id":"myuser2",
        "password_hash":"8767a7d316ad68cb607c7c805b859ffa78277dda13b7a3e2e8b53cad3cabbc6e"
    }
]