{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x63828830e279e2d5aa8b0ebb9ad2fa0d5d2ade070dbbf3d0f3adf65415f283c7",
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    "signer": "0x661038958CaBEA62127d3E61af25e811a6a1538A",
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}