{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2d65c7a030c5d5165d2408b1b6db2bb152fa0643066ea6faacaf556694dc216a",
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    "signer": "0xcE1bc8754AC45739236dB9A664029Dca0DAe18f5",
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}