{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcdd0f1da52e0b82ca8f605c784ba1ad62e7958e7dff0637a77d9be8a475acfa1",
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    "signer": "0xE584ca3e3489aa6580E3ed0d245fd330DD0Efc55",
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}