{
  "manageEntity": {
    "action": "Update",
    "entityId": "900057687",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradr2bsxo2sivykjspkg4n44bvvyckrwada77fsxql77hegqyzigkq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1795117483}]}}}",
    "nonce": "0x70e894ad6e54063bbc8211b9a064fac671936464d92cf9930cc6342c2c5a0569",
    "signature": "0x9eeda6931c4ab3c14778673a3d5e88b9403503f1bd6d28cb09bdc18f14ec6db25c0eff64bc4426a89fc94ce79a102d2b5fa8debcd71b7a6de1f77716ccd59cb91c",
    "signer": "0x61dBa7595A973b4e5dFDf3d692FADa360d015640",
    "userId": "900057687"
  }
}