{
  "manageEntity": {
    "action": "Save",
    "entityId": "117659",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x37ccee36aa372957007b15e675943ff466b2a0419dc77385d380d74d558059bc",
    "signature": "0x807f0a00398059fe38225ab3d955631c0813f4a31e897b5849ed9b77307349153379e5dbe5ededef656396220229a1a0fc996bca9f6ccfeec71c77e93d8c48f01c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}