{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4dd92922d4201edcec3cc791fc042e03ac5c5fef02b437cafaf275ec24fc0ed6",
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    "signer": "0x5efc36FC08151fef047922889Bea95522C17ba51",
    "userId": "391273209"
  }
}