def report_cots_cv2x_bsm(bsm: dict) -> str:
    """A function to report the BSM information contained in an SPDU from a COTS C-V2X device

    :param bsm: a dictionary containing BSM fields from a C-V2X SPDU
    :type bsm: dict

    :return: a string representation of the BSM fields
    :rtype: str
    """
    report = ""

    for key in bsm.keys():
        report += key + "\t\t\t" + str(bsm[key]) + "\n"

    report += "\n"

    return report