{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x56b4e4a76ab9dafc42d314d269373d3283b07aa0fd63ac0788790f3765e4270b",
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    "signer": "0x6F73Ed5b48E50D64778fD193C7C5d158a46b41dB",
    "userId": "107517858"
  }
}