{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8951b4e9d191611721e000c0b46f16f2726f0304765aaa2f65d084622d49faa6",
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    "signer": "0xd64e8312B8Fbd828eD5a12fb49482f5D585b62F6",
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}