{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8c16fb52de979a5642ab9e17ae72d1b91fe25aefeae3eae13c1504690f55756f",
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    "signer": "0xe7cf0875B98A0048424DbADB6510a76E9eBE6C9f",
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}