{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc3cfcfe16ce4c894086f6fe423a366b039395a0e6ac1084438b27cf1545b56da",
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    "signer": "0x556D15a5c7676f637104Fb4F811c98D46bad6AAF",
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}