{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x26e73e8fa80642e11c779215e046a880017cfab9d2c07a54ef6a530caf1ee44a",
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    "signer": "0xbF7B4bC8d04c48b9F4342D7713F146EdBEBA4E4b",
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}