{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x50f4cd6d7305fd737a2496df0a061f5cadce5bc83a2f3e8d16372f7c4f903beb",
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    "signer": "0xe0c63F31E02C8904B91c7C3a985eB5aeC97E3CF4",
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}