{
  "manageEntity": {
    "action": "Repost",
    "entityId": "664718",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x02a515c6e3d907be388a5b8ebf99fbc3287f8c5d4787aa138ce264377065766e",
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    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}