{
  "manageEntity": {
    "action": "Save",
    "entityId": "355751732",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xeb276a9e971f700293b6c8e4ee11fadd5f2add0c2484159fa2c8e76f2f15c833",
    "signature": "0xcececc09f80b368f2cfc484fa8f2169b725fb09ebe90c336a16c31ce866ae82337ed4ada22e790c2614e8f5ff2deb65327d932c6292e20f4fdd3a9f347c15de91c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}