{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdfb9f89dcdb167ce7369f8995e1d911e6df02a9b50d3c850169612c732397db6",
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    "signer": "0x8a8d1f785BEE5d1AFf57c8A2fb985f723d6BC856",
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}