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We present a detailed analysis of the spectral properties of the Seyfert 1galaxy 1H0419-577, based on the archival XMM-Newton, NuSTAR and simultaneousSwift observations taken between 2002-2015. All the observations show a broademission line feature at the iron band. We demonstrate that the broad bandspectral variability at different levels can be explained by the combination oflight-bending effects in the vicinity of the central black hole plus a thinwarm absorber. We obtain a black hole spin of a > 0.98 by fitting themulti-epoch spectra with the relativistic disc reflection model. 1H0419-577 isaccreting at 40% of its Eddington limit and its X-ray band shows the hardestpowerlaw continuum in the highest flux state, which was previously morecommonly seen in AGNs with a low accretion rate (e.g. $L_{\rm X} /L_{\rm Edd} <10^{-2}$). The NuSTAR observation shows a cool coronal temperature of$kT=30^{+22}_{-7}$keV in the high flux state.

A Relativistic Disc Reflection Model for 1H0419-577: Multi-Epoch Spectral Analysis with XMM-Newton and NuSTAR