{
  "manageEntity": {
    "action": "Repost",
    "entityId": "721547751",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x5881bac9e1bee8906dabbf28522212600d1545730614cecf5f7c614fc68b6dd2",
    "signature": "0xbac234c1f2e15d81d1e8d98f003553a32695d3ac578c42e2ccf5369b80d120670d086aba49fddafbfc4d6ee00a9aab48472703fc8159f5caca866329ddfd7c8b1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}