{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe5bf366d32ce6cb8ca0dd08a6be2253d007eadf2e6e3427eaf22676ff7c6ffae",
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    "signer": "0xb841D7d7966E43630444A3A9d2F02094fFa66a4d",
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}