{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x49f19d89b66b82c18e0ade3c5396ac54989a15e3752efc3b100f67806fca5f91",
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    "signer": "0x18fB4D3fA7B11f57452d736433C9B5373E0AfE98",
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  }
}