{
  "manageEntity": {
    "action": "Save",
    "entityId": "13129",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd528f65c7012b207b617d395406210c1ba397db0ef0a72dc0cff85b02338093b",
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    "signer": "0x6F272bE0cf1929131937536d1E57b571a5bEd994",
    "userId": "477662771"
  }
}