{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x761e3ea47f4b4294bce507c286664feb4b2d949643751f7f07f9a1c23ac199b6",
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    "signer": "0xAE2c0b3899295FA536E40421e18f01e9Afd30539",
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}