{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf04bc737ff5246838fe26bd490264e3ea9720580d9921835284414531e7b4313",
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    "signer": "0x1aA16fE3e79EcFEdcD54a15543136575E741D4fE",
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}