{
  "manageEntity": {
    "action": "Update",
    "entityId": "912925478",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraaop6a7kgxpopsy2mrqjspycegbbpt2lp6rh7jfhc6ssc3crg4awa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":838759487}]}}}",
    "nonce": "0xc796d6d1f0f3b0c69d4a89437e77ec70fedba79b08cb1d7db09e273abdd09b25",
    "signature": "0xa950ac39c917780631453d1f96bfc04d0e8f37707a72737d5ba298c588cd2ad17245169dca781a2a98d012e06caac292c5ec897258bcede00a12bae136504cb51b",
    "signer": "0xb1B6758E0F16Ff306fc9054B49d73834a7610ACB",
    "userId": "912925478"
  }
}