{
  "manageEntity": {
    "action": "Update",
    "entityId": "621925924",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6cc923779145918de0e9f6efe8c11412713b8d72f9ea6eeecd4e58b79d9c346e",
    "signature": "0xc598e66f26114827309d5205c5d2e5757658c79874a6399744bc75332d7704754c9792090b32e5ac8704cdd6fda0308727938524f189545e9953f71ca3ba589c1c",
    "signer": "0x9066d101AAbbd47801B905516c3456CfB5eff17B",
    "userId": "621925924"
  }
}