{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2bbcbbc1d3ed5a377a096244f92386149bc8d967e73cc7f6ee4a7c7531282612",
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    "signer": "0x6c59ca961df2CA40C1cE46d17F3E89c392340788",
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}