{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x218004f0caecf9a79471eb83c0658727165e9070985bd3decd0e1a92e07244c4",
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    "signer": "0x2f5F569A0543B8efa25CB381d41C74c6aabCdd9d",
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}