{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe1ef3d38d91ba798957d10cc3e5a9154e59bf7eef3e95c2c9ac2b72ecbcb483c",
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    "signer": "0x68aCA0Bed19134B3bC69EaAEdDDE24Ce0377fa39",
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}