{
  "manageEntity": {
    "action": "Save",
    "entityId": "107356",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe03500f089acd5281387118da2599040d8a755ac4757dd9e5d406be2ad3adbf6",
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    "signer": "0x3e48DC5763519fbdE0A26db7C59929E8Bb6B8Fe2",
    "userId": "971129804"
  }
}