{
  "manageEntity": {
    "action": "Update",
    "entityId": "447624565",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8bdd3ea301324fc863274693c1c497a8bb6b78a7dacdeea514a9167799cb1e26",
    "signature": "0xd7f844f99f05140682d222b790964da051ac979dc23519aea1467f7973116e9937c2198eed38bd1dbb8fe0ae5d70ee8e22b91dce12737dd39dd441ed24cdfe3d1b",
    "signer": "0xFBdaC5CB215cb5C9002aaA83664FfDB0e20018cD",
    "userId": "447624565"
  }
}