{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xeaae5b389f4355ba8434d532bec824dfb5eaf16b5deaf8896692da7097297b6a",
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    "signer": "0xbc45a3eD7750Da4ae1BbCB9892a1D2a67632c1d3",
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}