{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaf9f623d141df99e700b0516fd85baba8bda6ca8058e54abcc85d7c70c1553ae",
    "signature": "0x7f4e59e9784256688eb29c7e659cbf49d0c7cc37889541e729e189c15fae9ee675af6d1a8e8728e62878e1181bda1356b5f546b47eb145ff493d0b8cb46ed0831b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}