{
  "manageEntity": {
    "action": "Update",
    "entityId": "190661937",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd820e64be5831c661cdd4c319430d3f6140573c5bd17ef3045c4bc3b45fca7b1",
    "signature": "0x6d51323ecd2ec5fc29fa57f872af21d7cea857e75600affc2b09405833718bb40a71e1c877bbbac596efa0f1b0a265f5f4d3d8960c67cd606d0b894deda277b51b",
    "signer": "0x7d58E725Ea32a7e88B0839c4249336fE9eEC3474",
    "userId": "190661937"
  }
}