{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd87b42071e2f96796cfd611892de5b108651c64bcc225920888b199cddd18c34",
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    "signer": "0xAe4cBb170b064F25D3155e4b1dEf60b2EdF1537c",
    "userId": "839392286"
  }
}