{
  "manageEntity": {
    "action": "Repost",
    "entityId": "640374421",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x1ced9de712056a1f343aa5926476dd5ba1f456d396adf6ef9d308807970e6240",
    "signature": "0xb9c8ed7858b27a99375c9235af65bb0214afc4c411e718dea4b5e8b5cd9999790ad81b29424f305b3a3234d04948389b47ee9d835d601a5178807629b6cb3a7a1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}