{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc5957314c91c6a33bac26b4bd73fd60eb2b834efb0aca031271c2dd5b7580064",
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    "signer": "0x50b6162Bcc6011dB499a6E620bbed1838e3dbAc0",
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}