{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x41b04b000e4fef4488f3ed648b947b36f42f4fc0b7af606808cd1807b203d69e",
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    "signer": "0xCEE883d0cC7C90bE040Af1f13E5485579E32cb68",
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}