{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6dbfd237a24e6017b0a6126e429a03b09eb3ff23cc70c1efded78bb9290186bb",
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    "signer": "0x20DD2eBd4Fa6CCD0e13f61BE3B0361fA869D2CA5",
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}