{
  "manageEntity": {
    "action": "Update",
    "entityId": "918602404",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5c35b4490a85f24f0538c3058943549266779c8fe56a35d358fa8d70397580d7",
    "signature": "0x638e7e799311741d8a4dd8e843ab1a8f3ee8ffdb07ebe0f43d74a358d917aa7c4196e650c4ace0097ca8e3a1978aa3f36eb3f525d2693aee2f785a7dda30f6b31b",
    "signer": "0x9e6Bc923c3B1A420BDAF7b6dd8E4a6Bc51f0DfFC",
    "userId": "918602404"
  }
}