{
  "manageEntity": {
    "action": "Update",
    "entityId": "48788738",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2c232554f1dc31a609bb4ecab1d4054ce969fc07cd4d790a03f1a3c15796c862",
    "signature": "0xbc9ec6c72ada80c1ba9d51ca3edbbd013a20e6279390920ce3d50da0ef9f225f5d98c1c899678a96ff86a7dfc2bcc5a5d5cd870da097a01ebc8124e39b0c50051c",
    "signer": "0x570c44bf87B3a6048f1113aE88B3E3e0D7d6F2CD",
    "userId": "48788738"
  }
}