{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x155aaff4aa72faf221c9a36c1d214149f83b17638d98f589eac07484de650d78",
    "signature": "0x3a54f2431ea79ad97fe59f34885cabd8a1519b83dc865572aa6a101e1b4564a57ef60884eae073828b18b63fc40cbdb2c9728022d241bfc8f3d67e3e0a7742f01c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}