{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe1576090773cc10b0fd4adf73d605f8a9cd1fab3b9458dea0706ebeb45f83ef1",
    "signature": "0xd8e5a36d721a3c954d9a65499e3cec2fa3a48ca44e9a2b6004f094601a60ccc910a55dfbdb63f64b3de2456143e92b472edfe4de120dafe5a030355d6196d6641b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}