{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xea39347e36258c47f60e6d7275fa7db22e534996078da8605a5096282718a2b6",
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    "signer": "0x757c58fCe9FaE9f25A8a5c582D0ef1ba83c2e60B",
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}