{
  "manageEntity": {
    "action": "Update",
    "entityId": "20400094",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa6658dd98f6a4715c0814bd4a6b075c0b38541ee25d46db4508a8a49c61040de",
    "signature": "0x1b54967006d20a11f6f96d095033c6f5e00594e7622dbe6f04453908b9a4ac2a4629fa449442a21c25c338d26a4883c373c6a930213ae27a17e0c2c5776f49741b",
    "signer": "0x838c3a5d208187e094325179bad85fd0912673A1",
    "userId": "20400094"
  }
}