{
  "manageEntity": {
    "action": "Update",
    "entityId": "64132339",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawqyg2xbwcg7t6h2cdeloblhkobubnevwces7anjkmthqxotkcaaq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1893248228},{\"type\":\"playlist\",\"playlist_id\":1591228133}]}}}",
    "nonce": "0x37fc83a55b38bb727d69dfd4f25cfbcf9e8e8909565a456d245619b2ff3310f1",
    "signature": "0x8f444e6f10c0cabe71b98efd33de3985481aacce4bc513fae7de4263b422f71458579c1ff0c111c96251c807cd690400f0a777927e3bb3e29a9d0fadd5f75dd01c",
    "signer": "0x15D66F842f6827B89769bc8C99C363980f52a5ea",
    "userId": "64132339"
  }
}