{
  "manageEntity": {
    "action": "Repost",
    "entityId": "428876",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x3231a5e98094231ba75e56d0a45a085604bf739176008086c85875e1398fca4a",
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    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}