{
  "manageEntity": {
    "action": "Save",
    "entityId": "565371824",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xade3507f2ae29eafc5466454a6d28c687d497ff736e05ed311ad03936e270076",
    "signature": "0x46fce495c692b33e46938c97dd9fb55d2808145f88cd0b9979693e80705f70352af5adb191a6815589cc5decb261b8694b5b4065979055516d9afd48ffccd1e31b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}