{
  "manageEntity": {
    "action": "Save",
    "entityId": "60749",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8ec1b9246ae24fe3cd95f85fd4ab8dba132128b9820718aa8536dc10dc18ee77",
    "signature": "0x13c120baf74f97289fdaf404c4e4565c0623d686baf51bbf82b418364f2fc3333fb6817f39e2b94f03962202a85f69ac397e85deee83761ca08b94e6ad256eae1b",
    "signer": "0x6F272bE0cf1929131937536d1E57b571a5bEd994",
    "userId": "477662771"
  }
}