{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5f34123afad3b6d8911b8fa086d49fa482cfcc4b3626ed2e37cfa10bfb36612c",
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    "signer": "0x4A59A9F3b8D4eaEb6D464D1fA490e5F05e5F86E3",
    "userId": "96652407"
  }
}