{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xed04bb92340e9db43982f6c018d8b93855b76192592080c867a245c34e3730fc",
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    "signer": "0x9d291c3d255b974fe494F9679cb470BC6Ec7CA05",
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}