{
  "manageEntity": {
    "action": "Save",
    "entityId": "488122291",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa565335d46d9abf29627c87e594568a6b6cca7571fa5388b39a66ccee1e1190b",
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    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}