{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x61474d7db06ce8212e7446081706523373f2f9209a288241de448883ebcab705",
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    "signer": "0x7B611404A2832EbAB0D3EBc6E45f2F0c98380720",
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}