{
  "manageEntity": {
    "action": "Save",
    "entityId": "1824504566",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf01f4d7b1f884666f867056977594ba83350c99c8f6ce6dac44dc39a84331625",
    "signature": "0xab7d2e02cbb5efd9da117564ae3f8af11df8ce4f40bc7d080adca2ccea1f2a7d17d619494ed4fb5d78bcaba7b73f852766c8fa238b773854182e8f026d52ccbd1c",
    "signer": "0x8a278E79c8E7e655B94c3e6798972A44Daa2c6ad",
    "userId": "24098924"
  }
}