{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x59cb3e77b8607fa565f7a50db24b507a4e61c35f2dd16abef092eb050763cee4",
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    "signer": "0x967c77E6BD1aAb5DA9348e9EA3b6246cCfBEF68e",
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}