{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0c4e0b385d5cf12c9a11376a9f3b05b30c6859cadd4ea33af4a11b630618fc5e",
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    "signer": "0xefF7C914e8cb6F6d98EB6DD97a36437CcD58E5c5",
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}