{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xff8ff9c36bf1e8635aee5d6851820f6395947a4ea460f083134ca5a2ea600153",
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    "signer": "0xE8Cc4bA5Ac60eF4361589B963ED2acBe161c3e3D",
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}