{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xffbebc1fe5b78a52ca7d19de3a2f63a1ac5564d406b53ac73af3e760ed2a0005",
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    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
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}