{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbbfa18908798f04459e4c53086549f410afc4e0f5b1281d4aa094e0d1db3bd76",
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    "signer": "0x2B4FCf1A151e53AFf93Ac4EeA71c46Fe84AbD3ac",
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}