{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe4fe6276465b8a8b9c051c07456bcec81342495e5849ffc2227f5cba39dbc2b0",
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    "signer": "0x9aFEe643DbEC07Ca709990bFFba18669AE933e81",
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}