{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3c73edd47039f6133086f8b344b457786d155fd43c4efaee4a847e8181fcd425",
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    "signer": "0xE332434EEAD275569bfF055ed558704b8E56dE76",
    "userId": "687605395"
  }
}