{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1c7fd629ae589fda777a5e1f39b4d1d30b8f6081d0b4f82db890393279187c3b",
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    "signer": "0xE0dF9407B39a8Ec91567DE1940F988b6e37C17F5",
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}