{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x98a739ebfe8486ebbc27292b6253b0c44a79d272fef626e729f87d3bbe21852e",
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    "signer": "0x5236996ea02E55Fcf42b835184ae2199d5183dBa",
    "userId": "66705606"
  }
}