{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x55f33add4d7dc11fe1eb5a0e419c53752eb3e2b3ee3df26f9a022835af409062",
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    "signer": "0xe44ABcE5800Fb3945651B91354418f77B21328AD",
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}