{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb1253e0f5e8fac3b0b25bb35d4fac7161c7702f68ab10490870bdaaa08c76c88",
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    "signer": "0xa15e0Fe28074AAea430Bc6640816eAB723B796fc",
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}