{
  "manageEntity": {
    "action": "Repost",
    "entityId": "515409",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x6c3fdfb18348bc2f85f0c44097562427e641c17307bcf6b18a005b712871a58d",
    "signature": "0xb731c66b16a15641495cccc8816e705ae81773a228da9289b07a756d99ba95de532b67c6b5423d50dc3ff089b75c05c14a4655dc3431b59e43910cadc734a6c71c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}