{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb776072cdca65d746b65a7eb029d8b9b7e9c4604cc896788ac2391529c131146",
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    "signer": "0x2bB185cE0b16566295Fbc66e79C0546D98CD75C3",
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}