{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8f7633a7f339cb7c062c77d0ed52f7a0faf834b25ce6845b7c8273c7d505bc33",
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    "signer": "0xd49903961F96e6BD3f33b6cf57f077B5285791F7",
    "userId": "93648062"
  }
}