{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa0763e5498f36936eda6237fb0cfa841fe598d1d29735e8a09f12946126fb740",
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    "signer": "0x10825eCbad045A9Fc93c877D854a60B8Af9AA260",
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}