{
  "manageEntity": {
    "action": "Save",
    "entityId": "595042446",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4b439040cc2224f8415d78e2685eaddac134eb434ccde78d3395cda03b7ff04b",
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    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}