{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x19e8b30df38014e5e3eb6e6c6021e7f366b8198ea8cc1d73d37473bc98ec5562",
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    "signer": "0x62a97E8c3Be5397ff78ce222Ba066e256cde404B",
    "userId": "482352113"
  }
}