{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xfecce890d92e0f72adb0489859f562433d4a224f00faac3f79012d065a220b3d",
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    "signer": "0x064F47ceA1BD6c7f4E75eEaF6208Ca039d0c2D01",
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}