{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7640022166172cfd1f437454332569bdbc18bd9bafa0f2f7aaab54f11bfb7788",
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    "signer": "0xE0c84c3145F5c81F9F0DF78c3919568E264EC7fE",
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}