{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcf4b90e1c45948d3697f3ecd07f5b0db073b0b79a052fd4c2a4ad67bf3037227",
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    "signer": "0xdCAf5149A8084F2C1c72dE882740656EfA9715b4",
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}