prsm_data =
{
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        "prsm_id": "30",
        "p_value": "8.25e-08",
        "e_value": "8.25e-10",
        "fdr": "0",
        "matched_fragment_number": "8",
        "matched_peak_number": "9",
        "ms": {
            "ms_header": {
                "spectrum_file_name": "C:/toppic_tutorial/tutorial_2/st_1_ms2.msalign",
                "ms1_ids": "389",
                "ms1_scans": "763",
                "ids": "373",
                "scans": "764",
                "precursor_mono_mass": "8420.6764",
                "precursor_charge": "15",
                "precursor_mz": "562.3857",
                "feature_inte": "4.3789e+07"
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        "annotated_protein": {
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            "proteoform_id": "5",
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            "n_acetylation": "0",
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                "last_residue_position": "70",
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                    "ptm_type": "Fixed",
                    "ptm": {
                        "abbreviation": "Carbamidomethylation",
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                    "occurence": {
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                        "right_pos": "23",
                        "anno": "C"
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        }
    }
}
