{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2d50e74f6adadfd24bd4e8b1a7bcb2bb018fb7aee85e982262cf49397070242d",
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    "signer": "0x115aD6b177e9267f9364d9849cF82e6bC8Eb2f22",
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}