{
  "manageEntity": {
    "action": "Update",
    "entityId": "999396914",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratq32jakzpv2r5cnrsx767znp2hraykbzezge2c3ez5tfrjfxsxqq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1362308373},{\"type\":\"playlist\",\"playlist_id\":220181064},{\"type\":\"playlist\",\"playlist_id\":2053536487},{\"type\":\"playlist\",\"playlist_id\":1801932596}]}}}",
    "nonce": "0x31922c78032e8ae42015b5a8e44d2f2043b53d3c15fc7bbc9373ef1351a42ad6",
    "signature": "0x9b173df0c5fcb84545d92431e7f57bcff364d17e5e56ae47dc14477969a96b2159c1667a542524bdd17c5625f2c76c13cd07dcec4853f02989d2131da15c69741b",
    "signer": "0x447887A35958D25Fb5B659937312606ec7E55dBb",
    "userId": "999396914"
  }
}