{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x511c7a588391774567f7c2d94637aa0f4f3752dfd2257a0ce184078a5c5cf8e9",
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    "signer": "0x02b22aB437A19E1E948d9b814Ec57BEcC859a5d9",
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}