{
  "manageEntity": {
    "action": "Repost",
    "entityId": "21900",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x1b20031c886604dee46ad2437fe252656b66f4c54f7472c594fdceaaed8311e5",
    "signature": "0x85359631d8f996ff7d7751207dbb892127861d93b59f6fa1edde3e01caab363d6eb5b8339c763e39eba30fd87281a3633c321edf8487fa92754dde7d1707f4021b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}