{
  "manageEntity": {
    "action": "Save",
    "entityId": "78391",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xae08e2df41f2b83b553ecb617671af2db8e80462a0c2f66f00e40102ca90dc25",
    "signature": "0x07a68881b388e50a77c4a4ba36f3284896cd6fa4713de172ef11992aae674a375eabb154c2221fa830705afa12af46898f00c4ef446db07ec7524a372aeb7b431c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}