{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6ef1883163286d65a6154bf973bf1fe538c2c436162b0d1a88a88bd9e72ccf77",
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    "signer": "0xce8f5C07846a896F7B06174aa9e66865d33e2257",
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}