{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8ad946d2600502a76a91c271ced58e6503cf3503a222e4dd79fbcdc49178b6e2",
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    "signer": "0x99349974a285BA4Da3FB67Dbec77e3f462a5E306",
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}