{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4d738f37f03c847114c4c20ff5e5e6e377b25c0183bfaf7f42f1cae565c0a342",
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    "signer": "0x04d2AeF69165e1c1d73288e89Bf7e0Bf14608308",
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}